Gripper Strengthener Hand Grips Gripper Adjustable 22~88 Lb Exerciser recover Wrist Strength Training Blue training hand gripper Made of high quality lastics and stell and Ergonomic design Adjustable resistance range: 22-88 lb (10~40kg) Easy adjust resistance by turning the knob Designed to provide a full range of motion on each and every exercise and keep you in shape for a lifetime