NIYIKOW Grip Strength Trainer, Hand Grip Strengthener, Adjustable Resistance 22-132Lbs (10-60kg), Perfect for Musicians Athletes and Hand Rehabilitation Exercising Adjustable Resistance & Ergonomic Design - Perfect hand trainer, the dial can easily adjust the resistance from 22-132lbs. The Hand Gripper is ergonomically designed and suitable for all age groups and any hand sizes. Perfect for athletes, fitness Ideal Rehabilitation and Exercise Equipment - Excellent hand strength excises for people who have Arthritis, Tendonitis, Carpal Tunnel, and those who are recovering from a tendon surgery. Ideal hand and finger exercise and rehabilitation equipment. Portable Design - Hand grippers are easy to carry, which enables you exercising in any leisure time at home, office, or travel. High Quality & Comfortable - Comfortable rubber non-slip handles and top quality design with stainless steel extension springs. Durable and safe, it will not damage your hands and fingers. 100% MONEY BACK GUARANTEE- If, for any reason, you are not completely satisfied with your elbow braces, simply let us know and we will refund every penny. No questions asked. Our customer service will always be there to answer any questions you might have