IronMind Captains of Crush (COC) Hand Gripper - The Gold Standard of Grippers | The World's Leading Hand Strengthener

They may be a little squeaky to begin with, but I applied some vaseline and it's good to go!

Been building up the collection of COC. Guide (G), Sport (S) and Trainer (T) and all good for warm up or high reps, the 0.5 is the first one that becomes challenging to close fully. (31yo Male decent grip strength but limited by small hands)

High quality build, no issues def the gold standard of grippers

These are expensive but you will be able to leave them to your grand children. I started with the 1.5. Thinking I can deadlift 140kg with out straps, could I touch handles together, not a chance. 3 grippers later 0.5 could just touch handles, not easy.

Excellent piece of strength kit. Have noticeable strength increases after a few weeks from pinch gripping heavy plates around the gym. Deadlift grip is tighter. Highly recommended. Very well made and heavy-duty.

Having used a number of grippers the Captains of Crush are worthy of their reputation as the Gold Standard. Perfectly constructed and great to use, i'd be surprised if these don't last a life time.

I love this gripper! I lift heavy stuff at work and I am in no way weak (washing machines are no problem for me on my own) but the 0.5 gripper was tough to close to begin with. It is all about technique and I saw on youtube a load of grip strength tutorials. Jujimufu has a brilliant one with professional strongmen and they unlock the hand placement for beginners like me.

okay

It’s super difficult haha I would recommend you guys to get the lower one if you’re completely new but overall quality is amazing

Great product works well

It was a bummer that I bought it and then a couple weeks later its on sale, but I guess that is how it goes. The gripper is great quality, feels very sturdy and after reading all the reviews and their suggestions on their website I decided to start at the No .5 I'm very new to the gripping world and I wanted to ensure my hand and forearm strength don't diminish with age. Right out of the box I was doing 10 slow full reps closing it all the way each time. Not saying its easy, but I had hoped that I could build up to this. These are very expensive to buy in Australia, and I can't see myself to buy the next one anytime soon. Would be cool if I could send back and replace with the No 1. I'll just continue to work on this one for now I guess.

Buena calidad de los mangos, lástima que los muelles de estos grippers no estén tratados contra el óxido porque a los dos años ya empiezan a oxidarse. Son unos grippers más adecuados para manos grandes que para manos medianas y pequeñas. La tensión de resistencia que tienen no creo que esté bien calibrada porque no coincide con la lectura del dinamómetro. Por ejemplo, el captain of crush número 1 supuestamente son unos 63 kg y lo puedo cerrar perfectamente teniendo solo 52 kg de fuerza de agarre con la mano derecha.

As someone who’s serious about strength training, the Captains of Crush Hand Grippers have become an essential part of my routine. I’ve purchased the Trainer (100 lbs), 0.5 (120 lbs), No. 1 (140 lbs), and No. 3 (322.5 lbs), and they’ve proven to be the standard for grip strength development at every level. Build Quality The craftsmanship on these grippers is unmatched. The knurled aluminum handles provide a secure grip, even during intense workouts, and the spring mechanism is built to last. These feel indestructible and are clearly designed for people who are serious about increasing their grip strength. Progression and Challenge Each gripper offers a unique challenge: Trainer (100 lbs): Perfect for beginners or as a warm-up tool for advanced users. It’s a great starting point to build confidence and form. However if you already have a strong grip you may want to pass this one for the 0.5. 0.5 (120 lbs): A slight step up from the Trainer. It bridges the gap between beginner and intermediate levels, making it a staple for building grip endurance and strength. If you struggle with the No. 1, but find normal grippers easy this is a great option. No. 1 (140 lbs): A true benchmark for serious lifters. After many, many, many failed attempts, closing this for the first time felt like a significant milestone. In fact I've still not managed to close it with my left hand, and it may be several months before I get to that level. No. 3 (322.5 lbs): I foolishly purchased this years ago thinking my grip was above average. I can't even close this bad boy with 2 hands yet. However while I haven’t closed it yet, it serves as a motivating goal and still offers a lot just from the attempts. However if you haven't closed the 2 or 2.5 I would recommend you pass on this one. My Experience I became interested in grip when it started becoming a limiting factor in my deadlift before I finally adopted straps. I still incorporate these grippers into my routine 2–3 times a week, using the lighter ones for warm-ups and endurance training, while pushing my limits with the heavier grippers. Now that I've finally closed the No. 1, I plan to master it before progressing to the No. 1.5 and eventually the No. 2. It's also a lot of fun to see friends and family attempt them for the first time! Who It’s For Whether you’re a beginner, an intermediate lifter, or a seasoned athlete, Captains of Crush has a gripper for you. The progression system allows you to scale up as your strength improves, and the quality ensures these tools will last for years. Final Thoughts Captains of Crush Hand Grippers are more than just a training tool—they’re a benchmark for grip strength enthusiasts. You can even check their website for the leaderboard of people who have closed them in competition. If you’re serious about improving your grip, these are a must-have. Just be prepared to work hard and feel incredibly rewarded when you crush your goals.