1.exercise hand grip ,finger gripper 2.power grip,gym,health,training grip 3.fitness equipment, heavy gripper, 4.sport item, ... , finger power:5kg,10kg,15kg,25kg ect different power for various people, meet different requirement3,Ergonomically designed palm and ... muscle memory and increase dexterity 8,Perfect for training and injury rehabilitation9.suitable for the patient,adult ,the older ,children