Captains of Crush® Grippers


The fastest route to the strongest grip

If you had to pick just one grip strength tool, this is it

Original, authentic, unmatched—the gold standard for building and testing grip strength.  Designed to produce the quickest gains in grip strength.  Premium materials, proprietary elements, precision manufacturing and unrivaled customer support.  Available in 11 strengths for a perfect fit, whether you are just starting off, rehabilitating an injury, or can already crack coconuts with your bare hands.

Captains of Crush (CoC®) grippers changed the gripper world, taking what had been a cheap, imported plaything and turning it into a beautifully designed and crafted training tool for serious strength athletes.  Made in the USA and known worldwide, nothing else puts power in the palm of your hand like a Captains of Crush gripper.

  • Knurled aircraft-grade aluminum handles, pioneered by CoC grippers in 1995
  • GR8™ springs found only on CoC grippers and IMTUGs:  accurate, precise, durable
  • Precision manufacturing, world-class performance, feel, and appearance
11 strengths to choose from

Each $25.95

Captains of Crush grippers are available in the IronMind e-store and are also available from Amazon.

Take a look at IronMind's FAQ about Captains of Crush grippers.

Popular IronMind gripper sets

Download IronMind's free training booklets here:

Strong Hands, Healthy Hands Booklet

4 Grippers 1 Goal Training Booklet

Captains of Crush Grippers Instruction Booklet

CTD Cube Training Booklet

Further reading:

Hand Grippers Training and FAQ

Crushed-to-Dust!® Cube

Captains of Crush Grippers: What They Are and How to Close Them

Mastery of Hand Strength

GR8™ Springs

IronMind has been involved in manufacturing springs for our hand grippers for over 15 years, and because we’ve been diligent in our pursuit of perfection and had plenty of good fortune along the way, our latest springs, introduced in 2005, once again raised the bar in terms of precision, durability, and appearance.

GR8™ Springs are available exclusively on Captains of Crush and IMTUG grippers.

"The CoC owner's manual."—Joe Kinney, first man in history certified on the Captains of Crush No. 4 gripper

Captains of Crush Grippers:  What They Are And How To Close Them by Randall J. Strossen, Ph.D., with Joe Kinney and Nathan Holle.

This is the textbook for Grippers 101, required reading whether you want to be smart on grippers or just get as strong as possible on them.

CoC² = Captains of Crush Compatible

Training tools designed specifically for your Captains of Crush grippers, such as the CoC Silver Bullet and CoC Silver Bullet disc:

CoC (Captains of Crush) Silver BulletCoC (Captains of Crush) Silver Bullet Disc

The on-target tool for your gripper goals:  the updated version of "strap-holds."  19 mm bullet on a 19-inch strap that's good for 1,000 lb. 

Very serious grip guys, contest organizers, and those who like modern art will want their own disc for training and competing.  2.5 kg calibrated. 


Find all IronMind CoC² Tools here.

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Captains of Crush song by Laing - play it here.