KING F7 ONE Length Irons

The KING F7 ONE LENGTH irons debut as COBRA’s first ever single-length iron set. Inspired by rising PGA star Bryson DeChambeau.

F7 One Length



Availability: In stock

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One Setup One Swing


Proper setup includes foot positioning, spine angle and ball position, and many other variables. These variables change as you switch between longer and shorter length clubs, causing more room for error. With one setup and one swing you can simplify the entire process. Every player has their favorite club and for many, it's a 7-iron. With COBRA's One Length irons, you will find new confidence in your game, allowing you to play any iron in the bag as if it were your trusty 7-iron.


One swing for all of your shots

Long irons for more consistent distance

Tighter shot dispersion on approach

Short game accuracy improvement


The KING™ F7 ONE Length™ irons make their debut as COBRA’s first ever single-length iron set. Inspired by our relationship with PGA TOUR Professional, Bryson DeChambeau, The KING F7 ONE utilizes the same TECFLO constructions as the KING F7 along with PWRSHELL™ Faces and Precision Milled Grooves. However, the KING F7 ONE features constant 7-iron lengths throughout the set and each head has been re-engineered for proper geometry to deliver optimized trajectory and distance gapping from long irons to wedges. The end result? A simpler, easier way to play.

F7 One Length



  • Steel: 5-GW
  • Graphite: 5-GW

Model Loft Lie Offset
Graphite Swing
Steel Swing
4* 20° 62.5° 5.5 37.25" 37.25" D0 D1 RH/LH
5 23° 62.5° 5.1 37.25" 37.25" D0 D1 RH/LH
6 26° 62.5° 4.6 37.25" 37.25" D0 D1 RH/LH
7 30° 62.5° 4.1 37.25" 37.25" D0 D1 RH/LH
8 35° 62.5° 3.8 37.25" 37.25" D0 D1 RH/LH
9 40° 62.5° 3.6 37.25" 37.25" D0 D1 RH/LH
PW 45° 62.5° 3.2 37.25" 37.25" D0 D1 RH/LH
GW 50° 62.5° 1.0 37.25" 37.25" D0 D1 RH/LH
SW* 55° 62.5° 0.7 37.25" 37.25" D0 D1 RH/LH
*Custom Only


Fujikura Pro 63i

ModelFlexWeightKick PointTorqueTip Diameter
Fujikura Pro 63i - 7 iron S 66g Mid Mid 0.370
Fujikura Pro 63i - 7 iron R 63g Mid Mid 0.370
Fujikura Pro 63i - 7 iron Lite 62g Low Mid 0.370

True Temper KING F7

ModelFlexWeightKick PointTorqueTip Diameter
True Temper KING F7 - 7 iron Stiff 109g Mid Mid 0.370
True Temper KING F7 - 7 iron Regular 107g Mid Mid 0.370


COBRA Lamkin REL - Blue

COBRA Lamkin REL - Blue

Customer Reviews

Great Clubs Review by JTassman
Just hit 100 balls with these at the range. I have never had more consistent ball striking and distances and gaps seem to bee very comparable. (Posted on 4/14/2017)
briliant Review by trev
first time out best club I have ever hit recommend them 100% (Posted on 4/11/2017)
excellent Review by gooldy
Bottom line, i am a 2 handicap, they are as easy as it gets, with out a doubt the easiest club to hit, 4,5,6, iron ball flight higher shot pattern is a tighter group, approximately 5 yards longer for me, 7,8,9,w,gw. the same, ball flight higher, shot pattern tighter group, approximately 6 to 8 yards longer, every out there is looking for that edge to improve there game, here it is, do not knock this until you try it, you will be highly impressed. (Posted on 3/18/2017)
too easy Review by Troy
This just makes golf too easy. One setup one swing...after two range sessions I can say this is the best that I have ever hit a set of irons. I play to an 8 with the worst part of my game having always been iron play. I can see myself getting a whole bunch more GIR's with these. (Posted on 3/10/2017)
Good Demo Review by RhodyDivot
I did an indoor demo today of the F7 One Length 5 iron and 7 iron. I was impressed by both. Feel and sound were both good. I am undecided on whether I like the stock grip. I am now looking for an outdoor facility where I can test an entire set and see actual ball flight. Unfortunately, a March snow storm is pending. (Posted on 3/9/2017)
Works for a low handicapper Review by Matt T.
I am a 3.5 handicapper but very inconsistent. I can shoot 78,70,82 in a week span. I needed a more forgiving iron. I tried this from a friend and ultimately bought a set. The 7-GW are the most giving and easiest clubs to hit. They are high and very forgiving. A bad miss isn't nearly as bad as my other set. The shorter 5 iron is difficult for me to hit but then again it's not as if any 5 iron for me is easy to hit. Something about having longer "shorter" clubs have made me hit the ball higher and away from my pull hook shots. Worth every penny not only for mid handicappers but for low handicappers that need forgiveness. (Posted on 3/7/2017)
Follow up review Review by David
I have now played with my clubs. My previous review was based on range work.
This is going to be a great golf year for me.
I chose to get standard length despite me have 1/2 inch over standard with my old clubs. I thought I would loose distance on my new cobras.
I was wrong! I am waiting for my 4i and SW but my distances are up on my clubs, but for me I am hitting with 8i length.
Ball flight is so much different than I expected. The height on my 5i is better than my old clubs. I suspect some has to do with flex(maybe most), but my distance is now dependable. Direction and shot snape is something I will get used too. I have to get used to the ball flying where I aim 9 out of 10 times, where ten is a slight pull or push, but the same ball flight

Setting up for a 5i shot has become a non issue. Off the tee or ground, I get crisp, solid shots.

I had no shot out of the rough. Just second cut.

There are no more stars so five is as high as I can go. (Posted on 3/4/2017)
Good Concept! Review by Coachmastiff
I am a left handed golfer so demoing is something I don't get to do much! I have a playing partner who bought himself along with his two sons a set and they love them and I saw the difference in their games so I decided to try. Immediately I fell in love with the 5-8 iron but still adjusting to the 9- GW length but each time out that's improving. I'm a 9 handicap and hopefully these will knock a few more strokes off my handicap. These clubs have a good concept and individuals of all handicap ranges should try. Thanks Cobra (Posted on 3/2/2017)
They live up to the hype Review by Howietzer
The concept, of course, makes sense. But I am a skeptic when it comes to golf technology and have always believed golfers are the dumbest and most gullible consumers on earth. Including me. We want it to be true. Well I ordered these from Edwin Watts and kept the box thinking they would be on Ebay within 3 days. Boy was I wrong. They work. I'm a 9 and decent ball striker. What floored me was the 5 iron. Straight high draws that went the same length or a little longer than my Taylormade sldr. Every club had a wonderful ball flight the first time I hit them. Thought they were going to take some getting used to. Not at all. Set up like a 7 iron and let them rip. Nothing, including these, corrects a bad swing. But these clubs are much easier to hit consistently than a normal set. That's what Cobra claims and it seems to be true. I'm a believer. (Posted on 2/24/2017)
Good clubs, not built to spec Review by Andrew
I ordered a set of the F7, One Length irons from They are nice clubs, but the first time I took them out to the range, just looking at them at address, they looked too upright. I ordered them 1* flat per my specs and they were delivered 1.5* upright. This was measured on a Mitchell machine. I called customer service, and their only option is to send them back and wait for them to fix it for me (at least one week). Also, the shipping was delayed by at least a week due to low stock. I was not notified of this until I called to ask where the clubs were. They are not even willing to let me take them to an authorized dealer to have them adjusted, and they foot the bill (which would likely be non-existent). Very disappointing that they messed it up and are not willing to do much about it. I will have them adjusted on my own so that I can use them sooner, and I hope that they play well. Paying full price for a set of clubs, they should be delivered correctly. (Posted on 2/24/2017)
Half shots with every club Review by David
I am left handed so didn't have a choice to get the forged but I am extremely happy with purchase.

The first thing I did was get exact yardage for each of my clubs.

I normally get 1/2 over in length but decided to get standard length because my 8 iron is my favorite. That said I expected my yardage to be off due to the half inch length loss.

My results.

First every club hits like my eight iron. I love this. My shots are almost boring. What I mean is they look the same, no matter what club I hit. A slight draw and on target. It does take some getting used to seeing the ball come out lower on the longer distance irons like the 4, 5, and 6.

What I like most is my in between game is getting a boost. I can now reliably hit half and quarter shots with all my clubs and with dependable yardage.

This is going to be a good golf year.

The club head speed for each club was pretty much the same not matter what club I used. This could be looked at as bad but, now when I need a few extra yard I can just swing 10 miles per hour faster on any club and get consistent results. I now have a full show, relaxed full shot, and a give it a little extra full shot. I get reliable yard between the three swings.

My 7 iron is hitting in between my old 7 iron and my old 8 iron.

I may just add the sand wedge to my set.

I can't wait for some hybrids and woods to be made. (Posted on 2/23/2017)
AWESOME Review by canes1fan
the best clubs i have used hands down. i was hitting my PW 145 to 150. picked up 10 to 15 yards on every club. if you havent swung the all one then you are missing out!!!!!!!! (Posted on 2/21/2017)
Konop Review by Adam
I've wanted to hit these for a couple months so I went to Golf Galaxy today and spent 90 minutes comparing each club to my current set of Mizuno JPX-EZ Forged 2014 irons. I struggle with long irons like many golfers and carry a 3, 4, and 5 hybrid to compensate. Honestly, the F7's felt even softer than my forged irons. They offer great feel. Off center strikes were soft, but I could still tell where on the face I was making contact. It took me longer to get used to the 9, PW, and GW than it did the 5 and 6 irons. Unfortunately, the demo set had regular flex shafts and I'm a stiff flex player so the front to back dispersion was inconsistent. In the end, I pulled the trigger and ordered a set with stiff flex shafts. I'm excited to get them and start playing. (Posted on 2/20/2017)
Right on the money Review by Craig
Picked these up today after much research. Hit 5 iron and wedge on the monitor and liked the consistency especially in the long irons and how they felt on impact. Also enjoyed a slightly more compact head and sole vs. the Ping G30's I traded in. Took them to the range and hit the most consistent 5 irons in a long time. Very consistent ball flight and had extremely tight dispersion with five iron. For me these solved several problems with longer irons. I usually make solid contact but consistency in flight was questionable at times. No longer, looking forward to many rounds with these clubs. Thank you Cobra for bringing these to the market. Any doubters just hit them and give yourself a chance to decide for yourself vs. convincing yourself they can't work. I've played golf for 35 years and had no problem getting used to the single length. Some say the short irons scare them a bit but I found it an easy transition. Trust what engineering has created and reap the benefits. (Posted on 2/17/2017)
As advertised Review by Mojo1
Being a skeptic I ordered a single 5 iron with R Carbon shaft. In my current bag my longest iron is a 6 as with all my irons is 1/2" oversize shaft length. I use a 4 hybrid for my 150-160 yard needs but I often hooked it or went too long when hit solidly, hence the need for a 5 iron easy to hit and get 150-155 yards. Well I played yesterday and on four occasions used the Cobra 5 iron with great success. Each shot was right at 150-155 yards. Keep in mind this shaft length is equivalent to my current 8 iron that I hit 130 yards. That's some serious youju. I'll be trading in my current set for the remainder of the Cobra F7 1 length. Go get em. (Posted on 2/15/2017)
Game Changer Review by Down South
I'm not a good golfer. I've accepted my fate. But, I am a better golfer with these clubs! I would hit my 7 iron with my FORMER set about 150 yds. With the Cobra's, I'm hitting about 170-175. The Conra 5 iron is averaging about 200. No joke. I'm not kidding. When you hit the ball it just sails. No brainer. Give them a shot. And save a few by doing so. (Posted on 2/13/2017)
I ordered the K7 One Length Irons (5-9, PW & GW) Graphite shaft, LITE/Senior Flex, prior to the release date. The irons arrived 0n 1/16/17 and I carefully unpacked them. I had been playing the FLY Z woods, hybrids and irons (all w/graphite Senior Shafts) for about a year and a half and managed to get down to a USGA H/C Index of 4.2, in Nov 2015. I have read everything I could get my hands on about the ONE-Length Irons and wanted to give them a try. I teed it up (Senior Tees) 3 days later and made the transition from a standard set to these new sticks! I was pleasantly surprised that all 7 clubs were well made, with obvious emphasis on Q/C. On the first three holes(par 4s) I only had to use the GW. I hit a good run up shot on #1, a full wedge on #2 and a half wedge on #3. The grass is still brown in NC, but playable. I have to report that these clubs have consistent weight, length, grips and great feel! It is very easy to invent shots with them, once you find your tempo and ranges. I'm very pleased with the results. On #9, par3, I hit the F6 FWY Baffler4/5 185 yds into a strong cross wind and drained a 25 footer for a duce. COBRA's woods and hybrids w/rails should sell like hot-cakes - say good-bye to long irons! BOTTOM line - The ONE LENGTH irons put fun back into the game. COBRA has something for every golfer. I own 12 sets of pro-line clubs, which I plan to donate to the USGA's youth programs. I plan on working on the short game to reduce my H/C to one or two. I've been able to match and beat my age since 2015 and will reach 73 come this April. With new technology it seems to get easier every year. Thanks to the folks at PUMA/COBRA - they make what golfers want & need! (Posted on 2/3/2017)
Disappointed Review by GEEZER 7
Perhaps I expected too much but after 4 rounds with these same shaft irons I found no benefit. I shall try again in warmer weather. I am also disappointed in the heads and shaft quality as well. The wedges take some adjusting, not surprisingly. (Posted on 2/2/2017)
Love these irons Review by doug
I'm a new golfer, only playing for about 2 years. When I read about these irons last year I very interested in the idea as I've always struggled with long irons as I develop my swing. Late last year various youtube video came out showing trackman data against variable length irons. The data showed that players much better than me were getting good results and gapping from them. I figured even if they were worse, the single length would allow me to focus on swing development and not worry about the feel difference between a 4 and 8 iron. I also figured they would likely be more consistent. Based on that, I pulled the trigger on a pre-order and hit nothing but a 7 iron for a few months to prep for their arrival.

Since receiving these I've hit hundreds of balls with them and they are simply amazing, everything I hoped they'd be. For me, the ranges and gapping are good. I'm basing that on range observation, not launch monitor data. I'm also much more consistent and have never hit a 5 iron so far, so consistently.

These clubs have delivered the range and consistently I was looking for and allow me to focus on developing my swing.. fantastic product!
(Posted on 1/25/2017)
Works as described Review by WillyP
First off I have a 16 handicap and my biggest issue is changing clubs during a round. I can hit a 7 no problem but grab the 5 and chunk it into the turf.

Took out the Skytrak today to compare distance to my current set of M2's. I have to go by averages because I'm not a tour pro so I won't see a noticeable yard or two accuracy difference but on average they are right on. The one club that surprised me is the 5 iron. I normally hit on average 185 or so but the new one length I was hitting around 200. So not having a 4 iron in the set does not concern me as much.

The biggest bonus is once I got warmed up switching clubs made no difference in my swing and I was not chunking shots because I switched from a 9 to a 5. (Posted on 1/22/2017)
An outstanding product Review by Sparky
Incredibly solid. Incredibly consistent. I was one of the first to place an order and had them fitted with an extra stiff and medium weight shaft. I have very quickly adjusted to them and they are a game changer for me. I love these irons! (Posted on 1/18/2017)
They Work Review by drmike49
I"ve been around golf for 60 years. I was a PGA Pro for 30 years and a club pro most of that time. I began making clubs in 1969 with two shaft options - Dynamic and TT Lite. I made a set of single length irons in 1971 and due to the head weights the long irons looked like pipe fittings and the short irons like swiss cheese. But as ugly as they were - they worked marginally. In the 80 Golfworks came our with clubs you could weight with ports in the back of the clubs. I made another set that worked much better. Today we have Cobra introducing a forged set of single length - thanks Cobra for taking this huge risk that I believe will pay off. I hope ALL double digit handicaps will take this option and even most single digit handicaps would profit from using them. I've hit these irons but I'm playing a set I made for myself from components. I can tell you that the Cobra feel at least as good as the ones I carefully custom made for myself. (Posted on 1/18/2017)
Great clubs Review by Fastball
I bought them Monday. I bought the display clubs as the PGA super store didn't have any to try out.
I asked the rep to tape the 5 iron and let me hit it. I told them I did my research and I'm a buyer.
Long story short I was hitting it 190 to 195 every time and my accuracy was amazing.
Haven't had a chance to play lay but will soon. I traded back in my ping I's I just bought.
Now when I need a 4 or 5 iron I just think 7.
I'll let you know after my next AM tour event coming up
(Posted on 1/17/2017)
Love the one length Review by SOCal grampa
I am a 68 year old who has only been playing for about a year. Had an traditional iron set that was ok. Liked the idea of the one length and bought them. After two practice days and one round of golf I am a HUGE fan. Easy to hit, very forgiving and I have picked up 8 to ten yards per club and they are easy to control. I have the four iron thru pitching and am probably going to get the 3 and the gap wedge . Love the clubs. Can't wait to get back on the course. I am so happy you brought these clubs out. Good job Cobra. (Posted on 1/16/2017)
You gotta try these! Wow... Review by Professor E
I read an article about One length concept last night and was intrigued. I'm a Professor so I researched and read everything I could find this morning--and became even more intrigued. I even asked a colleague who teaches Physics to give me his take on the one swing plane and the weighting and all of that.

Early this afternoon, I demoed the clubs at Dick's. I was NOT in the market for new Irons but... I was beyond impressed. As such, I went back to Dick's tonight and bought a set!

So, while this review must be taken with a grain of salt--I have not used them on a course yet--I just had to share my thoughts here online.

The feel of these clubs is buttery soft. The ball jumps of the face. My previous set were Adams XTD Forged. They were fantastic but these are a whole 'nother level.

I hit the 5i and then jumped to the GW. It was a weird mental sensation looking down at Gap wedge with that much length but that's the thing about these clubs: you just put the ball in the middle of your stance and swing. That's it. No having to remember "play the ball up a tad" or "be steep with this gap wedge" or "stay lower on plane with this 5 iron." "Just hit the ball" was my one swing thought. I did and the gap wedge went exactly the right distance at a perfect trajectory.

When I went back tonight, I compared the One Length 6 iron with the Cobra F7 standard 6i. After hitting a solid One Length stick I put a good swing on the variable length version. The revelation: I could actually feel the 2nd shot (with the standard length 6i) going off center right. I literally felt it.

That was it for me. Sold! Sometimes you just know. Just go and try them. If they work for your swing, you will be amazed at the confidence surge that hits you.

So, while I haven't played these yet on a course, the 2 dozen balls I hit told me all that I need to know: these Irons are easy to hit, reduce all of the setup clutter in my head, and the ball feels amazing off the face. They give me instant confidence. That alone is worth the (very reasonable) price tag.

Again, just go try them.

About me: 16 hdcp. Former college baseball player. Lifetime athlete.

(Posted on 1/16/2017)
Very Impressed Review by Tim
Heard about one length several months ago and made good sense on the surface. One setup for all irons and one swing plane. When I would bring up with the club pro I would get raised eyebrows and some explanation of how a golf club works. When I found out Dick's had demo clubs I immediately went to swing them. They felt and swung very nice for being off the shelf and my distances were within 5 yards of current Taylor Made irons on their tracking system. Then I read and watched every review I could get my hands on. Long story short, I bought them on Friday morning at 10 am and was at the course by 10:30 taking off the plastic and hit the driving range for 20 minuets and then the course. Hit nine holes the next day. I am completely thrilled with these irons and no matter which club I pick it's still my 7 iron swing which is my most consistent. Had to get used to trusting the longer length pitching wedge would go 125 yds. Same with the gap wedge distance. The lofted clubs fly higher but spot on the distance as my other clubs. Even used 5 iron four times with straight and consistent results on three out of four. Less loft with the 5 but straight and on the green. I'll take that any day. Probably will stick with hybrids for the 190 to 200 yd shots though. As a 13 handicap I'm all over something that makes my game more consistent to shave off strokes. So far I love these clubs and have absolutely nothing negative to say about them. They feel and swing great. Even the grips are nice and feel a little larger than standard. Good job Cobra!!! (Posted on 1/16/2017)
I am a Believer!!! Review by Jimmy
I bought my set today and right away went to the driving range to test my new clubs. After two hours on the range I have to say these irons are AWESOME!!! Everything that I have read and watched online about these irons are true. I did not notice any difference in distance when compared to my set of Mizuno JPX-EZ. However, where these irons really shine is what they were built for in the first place. One setup and one swing. It was amazing that I did not have to adjust my setup at all when changing clubs just like what the advert says.

I put some impact tape on each of the irons and after one session I can definitely say I personally had much more consistent impact with all the irons.

My advise for anyone who are researching or skeptical of these irons is just trust the club and swing as though you are swinging a 7 iron. Give them a try and you will change your mind. I truly believe that these irons are game changers for the golf industry.

Thank you Bryson and Cobra for making this concept and these irons a reality because I am a believer.

(Posted on 1/15/2017)
No thinking required Review by Pliny
Great clubs, I bought the whole set. Distances are very good, height is good, feel and forgiveness is outstanding. I put Nippon Modus shafts in mine, amazing combo! (Posted on 1/13/2017)
Awesome Set and Love the One Length Review by Perry
Played my first round today with the One Length F7s. I was totally impressed with how natural they felt from my first gap wedge to my last 8 iron. Too wet for the range today so simply put them in the bag and went out to play. I am not totally sure whether it was just going to be a good day for me, or was the one length system but I was hitting the irons stiff all day. First swing was with a gap wedge to 6 feet and the last swing was an 8 iron to 12 feet. Lots of use in between in the 16 holes we were able to get in. Not a lot of use yet, but my first impression is what you might expect. The 7/8 irons are about consistent distance with a varied length set, while the 9, P and G wedges are maybe 3-4 yards longer and the 5-6 are maybe 3-4 yards shorter. I only had one chance to use the 5 iron and I had stuck my tee shot being a large bushy tree 170 frm the green. Touch lie in the rough. Hit the 5 iron and as you might expect its ball flight was very low due to the low loft and I was able to keep it under the tree easily. Used the 6 iron off a par 3 tee and that actually had plenty of height on it as the ball was teed up. I think it may have flown a couple 3 yards shorter than my normal 6 iron but it will take more rounds to figure that out. The amazing thing was that an oncenter strike felt exactly like a forged blade. That buttery compression feeling that you only get with good muscle back forged clubs. I haven't felt that since I went to game improvement clubs some 15 years ago. Try them you will be amazed. (Posted on 1/12/2017)
Excellent clubs Review by Ron
I bought a set last night played my first round today shot 71! I'm a scratch golfer I couldn't believe how solid I hit these irons I really thought I wouldn't get the distance with these irons as my pings but to my surprise I hit the ball even longer I'm amazed!! (Posted on 1/12/2017)
Wanted to hate them.... Review by Nele22
As a 5 handicap and a bit of a traditionalist I really wanted to laugh these off. I was able to spend a few days of course and range time this week with these. After about 30 minutes it "clicked."

I cannot put them down. I am hitting all shots much tighter and with ease. All the same set up and just swing. So much easier.

All I can say is just try them. It was a game changer for me!
(Posted on 1/11/2017)
Amazing clubs Review by Zach
Got to demo these at the local sporting goods store. Was skeptical at first, took a few shots with the 7i then tried the GW next, was blown away after a few swings. Incredibly consistent shots. Less thought process on swing plane and angles, with the lengths all the same.
Has really changed my thoughts on buying new irons this year. (Posted on 1/11/2017)
Best Idea Ever Review by Jeffrey L Peters
I cut a set of clubs all one length and my friends laughed. Now Cobra engineering has come through for me. And to think Moe Norman was a good ball (Posted on 1/8/2017)
Can't wait!! Review by Biscuit
I can't wait to get these irons. I absolutely HATE long irons... somehow I can hit my 7 iron longer n better than my 6-3 irons. I'm looking forward to getting these and having em ready for when the snow melts!! Thank You Cobra!! (Posted on 1/5/2017)

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