Adjustable Hand Strengthening Gripper Workout Exercise Comfort Grip to Workout Hands, Fingers, Forearms, and Arms. Build stronger forearms, wrist, hands, arms, and fingers. Adjustable weight from 20 to 80 pounds is great for light weight to heavy weight strength enthusiasts Perfect for every type of training, whether you are male, female, an amateur, advanced, professional, or just looking to strengthen your grip Great for athletes, artists, musicians and anyone needing to increase hand/arm/finger strength. 100% Money back lifetime guarantee