Injury Rehabilitation - Made of high quality, soft silicone to ensure optimal exercise. Durable and safe, it will not damage your hands and fingers. Helping recover in hand injuries, arthritis, or broken wrist, or when you type, text or any other activities which use your gripping muscles. Counting Hand Grip Strengthener - With a smart counter on the bottom, simplely press the botton and count automatically, hand grip exerciser will record the number of you exercise each time and can be re-use it. Adjustable Resistance Forearm Grip - Designed with adjustable resistance from 22-132lbs, the hand grip srengthener is effective to develop dexterity of finger hands wrist and forearm by increasing or decreasing the tension. Portable & Comfortable - easy to pop into your pocket or backpack, allow you exercise your hand anywhere and anytime, whaterver at home, gym, office, or when you take a walk, watch TV, outdoor and travel. Perfect Exercise Tool - The Hand Strengthener Kit helps you strengthen and exercise your hands, fingers and wrists. The good choice for athletes (climbing enthusiasts, fitness, tennis, baseball, boxing, tennis, golf and shooting) and musicians (guitarists, bassists, pianists and violinists).