What They Are and How to Close Them, Second Edition
by Randall J. Strossen, Ph.D., with J. B. Kinney and Nathan Holle

Captains of Crush Grippers inspire passion, and this is the book that traces their history, outlines gripper basics, and gives you training information that is proven to work. Joe Kinney calls it the CoC owner's guide, all you need to get strong and smart on CoC grippers. 192 pp.