Grip Strength Trainer - Double-Sided Finger Exerciser and Hand Strengthener for Hand Therapy, Rock Climbing - Relieve Pain for Arthritis, Carpal Tunnel. Adjustable Finger Exerciser and Hand Strengthener: Change the positions of the hook to adjust the resistance value, 6 levels resistance( Heavy Black: 13 lbs, 17 lbs, 21 lbs and Light Grey: 6.6 lbs, 8.8 lbs, 11 lbs), Suitable from beginner to advanced.
