• Knurled aircraft-grade aluminum handles, pioneered by CoC Grippers in 1995.
• 20-year history of product development and refinement.
• No-surprise geometry: you can count on the consistency and precision of Captains of Crush Grippers.
• Proprietary GR8 springs, only on CoC Grippers and IMTUGs.
• 11 strengths for a perfect fit.

1Guide (60lb) The Guide gets you the quality of Captains of Crush Grippers accessible to people with modest levels of grip strength. Sport (80lb): If you are ready to move your grip training up one more notch, the Sport is perfect for you. Trainer (100lb): Where serious grip training starts, this is harder to close than anything you'll find in a sporting goods store. The Trainer is not a wimpy gripper, and chances are that if you've been lifting weights for a while the Trainer will be just the right place for you to start. No. 0.5 (120lb): Transition to the powerhouse CoCs, the Point Five is perfectly positioned to give you the boost you need to conquer the No. 1. No. 1 (140lb): This is where things start to get serious because most people who lift weights cannot close the No. 1 Gripper the first time they try, and when you can do ten honest, consecutive repetitions with this gripper, you will already have an unusually strong grip. No. 1.5 (167.5lb): The No. 1.5 is halfway between the strength of a No. 1 and a No. 2; some may find this intermediary step invaluable. No. 2 (195lb): If you are strong enough to fully close the No. 2, you have exceptionally strong hands, the kind of hand strength that will be at your beck and call day in and day out, whether on the job, at play, or in a life-or-death situation. No. 2.5 (237.5lb): Once you have mastered the No. 2, you will undoubtedly begin to think about closing the celebrated No. 3. No. 3 (280lb): Closing the No. 3 (is the most famous feat in the world of grip strength, and it is such an accomplishment that in 1991, IronMind began certifying people who officially achieved this landmark status in the world of grip strength. No. 3.5 (322.5lb): Once you have been certified on the No. 3, chances are excellent that you will be looking at the No. 4 with bad intentions, and to help you close the gap, IronMin