Captains of Crush®
Captains of Crush Gripper. 1. The gripper must be an authentic IronMind Enterprises Captains of Crush® gripper. 2. The gripper cannot have been modified or tampered with in any way. 3. Ordinary chalk (magnesium carbonate) may be used on the gripping hand, but nothing else is permitted (liquid chalk, for example, is specifically disallowed). 4.