Build up your wrist and arm strength, lightweight and easily carry, easy to clean and store..Ideal for athletes, musicians, rock climbers, golfers and tennis players.Great for improving grip strength, hand endurance, muscular tone and fine and gross motor skills anytime, anywhere.If you suffer from rheumatoid arthritis, arthritis, carpal tunnel, tennis elbow and are on the way to recovery from a fractured or broken wrist, or tendon surgery, then this is the perfect gripper for you. This tool is constructed to be durable and offers users a good quality design with stainless steel tension springs