Whether you are rehabbing an injury, are just starting your grip training, or can already crack coconuts with your bare hands, there is a Captains of Crush Hand Gripper just right for you: ten different strengths, but what they have in common is the DNA that is the gold standard for building and testing your grip strength. Forget about the cheap, plastic-handled grip imports you played with as a kid, these hand grippers are the real deal: made in America, knurled, aircraft-grade aluminum handles fitted with IronMind’s proprietary GR8™ springs, the latest advance in our twenty-year history of designing, building, and selling the hand grippers that changed the world.