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 if you want to be smart on grippers or just get as strong as possible on them.
Developed in 2012, the CoC Silver Bullet combines strength, endurance, and power in one movement. Perfect for training and competition, whether you think your hands are too big, too small, or just the perfect size for grippers.
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.
Quit guessing and start gaining: Here's a precise way to assess your performance and gauge your progress on CoC grippers. Measure the gap between where you are and your goal.
A simple, easy way to keep your grippers at hand and in line, ready for training.
It IDs you as a special grip guy with membership in the largest, strongest grip community in the world. First card free with the purchase of a Captains of Crush gripper.