Short Product Description:

  • Adjustable – Six (6) resistances, 55 to 198 lbs/ 25 to 90kg
  • High-Quality – Good Design, Smart, yet Simple Structure
  • Superbly Engineered – Ergonomic, fully built with metal
  • Includes Add-On parts: Extend the length of the handles

Versatile & Sturdy - Probably the One & Only gripper you'll ever need - EXT 90 Adjustable Gripper, by GD Iron Grip

Excellent Hand Strengthening device to improve your Crushing Grip strength

EXT 90 Adjustable Gripper, by GD Iron Grip

Product Overview

Beautiful yet robust, silent yet sturdy, rough yet ergonomic – EXT 90 Adjustable Gripper has exceeded my expectations.

Perfect craftsmanship, high-quality, solid & more importantly, adjustable – Probably the only gripper you’ll ever need.
I personally really like this hand gripper since it covers most aspects you would seek in a hand strengthener such as this.

Technically, with one single gripper such as EXT 90 you’ll get 6 different grippers – Excellent to cover all of the aspects of
a perfect workout – Warm-up, working sets, challenge sets, cool-down sets.

It’s also on bar with famous Captains of Crush grippers that are deemed as the gold standard of hand grippers.

Meanwhile, EXT 90 has also quite aggressive knurling compared to CoC grippers – Prevent it from slipping in your hand
to get a solid grip workout in conveniently & effectively.

What are the Pros & Cons with EXT 90 Adjustable Gripper?

It’s Almost Flawless


  • It’s Adjustable – Includes six (6) different resistance levels – By far the biggest advantage! Forget about buying multiple grippers, you need only this one, unless you’re a grip training enthusiast like me.
  • Very High Quality – Built like a tank, sturdy, beautifully designed, & brutally effective – A gripper you likely have to buy once only, since it will last you for years.
  • Doesn’t Squeak – It’s sturdy yet silent, & its spring does not squeak nor make weird noises. Train even in silent library if you want, without pissing off people around you.
  • Ergonomic – Well designed, fits well in your hand & provides support for your hands to train your crushing grip strength effectively, without injuring yourself.
  • Knurled – Adding a top-notch look to your gripper as well as provides aggressive enough knurling on palm side to prevent your hand from slipping on handles.
  • Includes Extensions – Handle extensions are being added to make handles longer & to help you get better grip in case you have bigger hands.. or, in case you want to add & have more challenging approach. 


  • Requires investment – This hand gripper is obviously on the expensive side. You should take your time, & think it through if you need one: Consider it as investment. It’s 6 grippers in 1, thus expensive, yet well worth its price.
  • Handles don’t touch – Not really a con, but just putting it out here: Unlike most grippers, this one is designed in the way its handles won’t touch completely & grind against each other. It doesn’t affect range of motion necessarily but provides slightly different feel.
  • May be too tough for beginners – If you’re a complete beginner, this one can be a tough nut to crack. The easiest resistance level begins at 55 lbs / 25 kg.
Excellent Product Alert!

EXT 90 Adjustable Gripper - Ranking 96 out of 100

Why, in fact, EXT 90 Gripper is very INEXPENSIVE?

You get 6 Hand Grippers in One

If we divide $62.79 with 6, we get $10.465 – There you have it, a High-End gripper for $10

That deal is pretty crazy, isn’t it? For example, if you take a look at Captains of Crush grippers, which are one of the best grippers available these days, you can get one for $25.95. In other words, EXT 90 gripper is technically 2.5 times cheaper
than any of standard CoC grippers, if you look at it that way. It’s definitely worth your money & taking advantage of it.

CoC gripper VS EXT 80 adjustable hand gripper

EXT 90 has wide, adjustable resistance – 55 to 1981b (25 to 90kg) – Plenty of progression room from beginner to expert.

Owning the Iron Grip Adjustable Grip 90 EXT is like owning six separate metal hand grippers.
The GD Adjustable Hand Grippers contain six adjustable tension levels.

The EXT Adjustable Grippers Axis of Handle is NOT Twisted

Excellent for Training Both Hands

Compared to regular classic spring grips, the EXT grip’s axis of handle is not twisted.
It’s a peculiar innovation for GD line of grippers.


So what does that mean for you?
First & foremost comfort, but in my opinion more importantly versatility

Instead of getting specialized grippers for both hands, such as right-wing & left-wing spring grippers, you can use EXT grippers in both hands & they feel pretty much the same way. It’s a more ergonomic design that most grippers can offer you.

I’d say as an additional bonus it saves you both time & money – No need to order multiple grippers, if you’re looking for a way to save up space in home, as well as get things done efficiently.

It’s a Big Thing – Vast majority of regular grippers have right-wing springs only

A right-wing hand gripper, designed for right handed crush grip training – Captains of Crush – The Gold Standard
A left-wing hand gripper, designed for left handed crush grip training – Captain of Crush Left-Turn Gripper

This is another good reason, why EXT Adjustable Gripper is a great investment. It has everything you need to take care & train both of your hands with one single gripper only.

There are Two Versions of EXT Adjustable grippers for Your Convenience

Black & Red versions

(Click here for Red version)

EXT 90 (Black),

Resistance levels are
25 kg (55lb) to 90kg (198lb.)

Black (tougher)

  • Stage 1. 55lb (25kg)
  • Stage 2. 84lb (38kg)
  • Stage 3. 112lb (51kg)
  • Stage 4. 141lb (64kg)
  • Stage 5. 170lb (77kg)
  • Stage 6. 198lb (90kg)

Red (easier)

  • Stage 1. 55lb (25kg)
  • Stage 2. 79lb (36kg)
  • Stage 3. 104lb (47kg)
  • Stage 4. 128lb (58kg)
  • Stage 5. 152lb (69kg)
  • Stage 6. 176lb (80kg)

EXT 80 (Red),

Resistance levels are
25kg (55lb.) to 80 kg (176 lb.)

EXT 90 Adjustable gripper Offer Includes Handle Extensions

Make it More Challenging

This is pretty straightforward upgrade to your gripper & is exactly as it sounds:
Make the handles of this adjustable gripper even longer.

EXT 80 Adjustable gripper & handle extensions

1This is absolutely great option in case you’re an individual with larger hands. There are plenty of bigger & stronger guys out there, with extra large hands, who are doing repetitions with hand grippers using only 3 fingers & thumb to squeeze.

By making handles longer you don’t have to neglect your pinkie finger anymore & you can utilize it along with your other fingers. It’s great & leaves no excuses to get the maximum out of your grip workout.

2Another possible upgrade with longer handles is to make a gripper more challenging – It’s depending on how you place gripper in your hand. Also, this can & will vary a bit from person to person depending on their hand sizes.

If you’re are person with smaller hands, then you have a lot more options & room to play around. A great way to get creative & challenge yourself in numerous different angles & starting positions to close the gripper.

3Also, longer handles are excellent, if you can’t close a gripper on higher resistance level yet & you’re doing negative repetitions. Longer handles are great to help you to close gripper with two hands & practice negative repetitions.

In fact, if you’re serious about getting to the next level in your gripper game, doing negative repetitions are not only necessary but a big part of your grip strength progression. Having longer handles on gripper is definitely a positive & effective contribution you don’t want to miss out on.

Why is it Important to Avoid Cheap Grippers & to Get a High Quality one like EXT 90?

to Avoid injuries & to be Consistent

I’ve always said that, & I’m gladly saying it again:
Remember, there are 2 major problems with cheap grippers: 

  1. Durability – Cheap plastic grippers springs tend to snap much more easily – No, you don’t exactly want sharp shards to fly into your face in the middle of your exercise & injure you. That’s  the #1 reason to take a bit more expensive route – You want high-quality product to invest smarter & also AVOID INJURIES caused by cheap/faulty devices as much as possible.

  2. Consistency – You’re buying a hard to close, let’s say cheap 100-lbs plastic gripper, & couple of months later you’re closing it for reps like a master, like it’s nothing. It makes you feel like you’re tough guy & you’ve made a hell of a progress – Wrong, the reality is, that gripper spring likely just wore out. To monitor your progress better, the solution is High-Quality Gripper.

It’s simple as that – Train safely & be consistent.
Get better results & progress faster due to precise & reliable measures.

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Thanks for stopping by!
I hope you enjoyed reading my review & learned a lot about EXT 90 Adjustable Grippers along the way.
Have you used this product OR similar products? Whats your training experience alike?

I’d love to hear from you!
Feel free to ask for assistance & share your thoughts by leaving a comment.


Greetings! I'm Henry & I'm a friendly fellow who started this website to help you to improve your strength game. I’m fascinated by calisthenics, strongman training & weightlifting – I’ve been a powerlifter & martial artist for more than decade. Being passionate about strength sports, I'd love to discuss about these topics.

13 thoughts on “EXT 90 Review – The Craziest Adjustable Gripper Available?

  1. Wassup Henry

    The EXT 90 looks like a great buy.

    People should understand you pay for value. And the EXT 90 is durable and high quality.

    I think it looks amazing and I love the option to change the weight.

    This will make it more challenging and put more muscle on my forearms.

    Quick question: Does it come with a training program?

    1. EXT 90 adjustable gripper comes with handle extensions,
      there’s also an alternative EXT 90 version available that comes with pinch-gripping handles which is pretty neat upgrade.

      No particular training program nor manual is included with this offer yet.

      Although, no worries, to get more insight on hand grippers, I recommend you to check out following manuals such as “Grip Strength – How to Close Heavy Duty Hand Grippers, Lift Thick Bar Weights, & Pinch Grip Just About Anything”, by R. Spindler & T. Heslep..

      OR..“Captains of Crush Grippers: What They Are & How to Close Them”, by R. Strossen

      Including to paperbacks, there are kindle versions available.
      You can grab one with couple of clicks & start reading right off the bat without any further delay.

      ..& by the way, for the record, the author T.Heslep is only 1 of 5 people in the world who has officially closed CoC #4 gripper.

      Quite a mentor to have, priceless stuff!

  2. Henry
    I like this article. I used the old style grippers as a kid.

    They were either too easy or too hard. I always worried about injuring myself.
    These adjustable grippers look great. The settings chart was a big help.

    Do these work more than the muscles in your hands?
    Do they improve wrist and lower arm muscles as well?

    1. Absolutely Scott,
      Grippers are definitely your “bread & butter” to develop crushing grip strength, to build formidable finger strength & strengthen tendons, but you can also use them to perform static holds.. an excellent way to build support grip strength to increase your deadlift max etc.

      To improve wrist strength, much more direct approach would be to use wrist rollers..
      such as Twist Yo’ Wrist by IronMind instead of regular hand grippers..
      OR.. Adjustable wrist roller SideWinder ProXtreme to take your wrist strength to whole another level.

      The more precise equipment is, the more convenient & effective it likely will be for progression.
      Indeed, choosing the “right” gripper is not exactly an easy task. EXT 90 makes this a bit easier..

      It’s always good idea to approach with caution when it comes to training forearms.
      It’s one of the smallest muscle groups in our body – Almost too easy to get injured.
      Thanks for stopping by & stay Safe!

  3. This is really cool and helpful.
    I’ve been using the old and cheap handle thats passed down from generations lol.

    But i’ve been looking for ways to improve my grip. So far i just been doing fingertip pushups whenever i can.
    But this seems like it’ll do the trick.

    Is amazon the cheapest place to buy?

    1. Ha, those cheap handles are a wonder – Sometimes they snap right off the bat, & sometimes they seem to have infinite durability.
      For that fact alone & the surprise element they bring, it can be fun to own one.

      Fingertip push-ups are pure awesomeness for impressive finger & open hand static strength! Thanks for mentioning & bringing it up!
      For counter-movement, I’d throw in some handbands to improve hand extensors: Helps with hand muscle balance big time.
      In addition, gripper covers your hand crushing grip movement, so you have all basic movements well covered.

      Indeed, Amazon is cheapest place to buy EXT 90 adjustable gripper, PLUS you get this item shipped for free.
      Also, it pays off to keep an eye out for sales, discounts happen frequently with Amazon.

      Thanks for stopping by Garrett, let me know if you need assistance with anything.

  4. Hey Henry!

    I didn’t even know that such a grip training product existed at all! Your post on this item is very informative and very detailed. I also like the fact that you wrote the cons of this item as well (although it doesn’t seem to have many).Thank you for your review!

    1. Hey Antonis, & thanks for stopping by!
      It’s absolutely wonderful to show you & introduce you something brand new.

      Grip training is essential, vital to our every day tasks, yet often overlooked part of regular workout sessions.
      Using grippers like EXT 90 is widely known way to strengthen your forearms & one of the most basic hand movements, which is crushing grip.

      Luckily, there’s quite an impressive array of different grip training equipment available these days.
      For your convenience, I’ve listed a great deal of equipment on this site that can help you progress.

      Plenty of fancy “toys” & something for every taste

      Let me know, if you need help with anything.

  5. Hi Henry!

    I really love that they’re adjustable!

    I’ve had many grippers in my life, mainly plastic ones, and they are noisy and easily breakable.

    I think I will give these a try for a change, they look really reliable with that ergonomic and high quality material.

    Thanks for the thorough review and charts! Very helpful!

    1. Hehe, you’re welcome & thanks for sharing your experience!
      Plastic grippers can be fun in their own way, but yeah, they’re also very unpredictable
      *SNAP* just like that..

      I’d also love to hear about your progress once you get going, to try this new, slightly more adjustable angle.
      At the end of the day, getting a dedicated, well-built gripper saves you more money in the long run..

      ..& more importantly, keeps you away from injuries as much as possible.

  6. Dear Henry,

    Hello Henry. I’m Jisu An, overseas manager for GD. We are manufacturer of the GD IRON GRIP EXT 90.

    I found your review of GD IRON GRIP EXT 90 and it is really impressive review.
    I appreciate your detailed review. I was very surprised that you know the exact strong points of the gripper.
    I’d like to upload your review on our official website. Is it fine? 🙂 I want to introduce your wonderful review to our customers.

    And also, we are preparing for launching new gripper and other home gym equipment.
    If I have a chance, I’d like to send you our new products when it is ready for launching.
    If you are interested in getting free samples, please feel free to contact me.

    I think the Amazon link of GD IRON GRIP EXT 90 that you uploaded is invalid.

    The listing on Amazon is as follow.

    If someone is interested on this great product, please check the above link.
    Thank you so much for your great review.

    Best regards,
    Jisu An.

    1. Thank you Jisu,

      It’s wonderful to hear from you & that you like my EXT 90 review.

      & Thanks for your keen eye:
      I’ve updated the Amazon link, it happens time to time when they move some products to different page.

      Feel free to share my review with your customers
      & I’d love to try your new gripper


  7. Dear Henry,
    I am Andy Shen, we are manufacturer of gym chalk block, gym chalk powder, gym chalk ball and liquid gym chalk.
    We sell our products to USA, UK, GERMANY and so on.
    If we have a chance, we’d like to send you our products detail information.
    If you are interested in getting free samples, please feel free to contact me.
    Best regards
    Andy Shen

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