Color?Black body and red gripper Size?14.5 x 9 cm / 5.7 x 3.5 in Main Material: Stainless Steel Polypropylene TPR Resistance Range: 5-60Kg / 11-132Lbs Package Include: 1X Hand Grip Trainer Gripper Features: 1. Comfortable and easy to hold, rubber non-slip grip and with ergonomically design, suitable for all age groups and any hand sizes. 2. Adjustable Resistance, easy to change and adjust spring tension from 11 lbs / 5 kg to 132 lbs / 60 kg. 3. Compact And Lightweight. This Strength Trainer Kit is small enough to fit into your gym bag or handbag. You can get repetitions in while reading, walking, at the office, at the movies.Product Details Just at anywhere and anytime. 4. Better quality, strong and durable. With thicker stainless steel strings. Will have longer service time. 5. Multiple use, perfect for athletes, fitness and sports enthusiasts and musicians who want to develop their hand, finger, wrist etc. 6. Grip strengthener, designed to increase the strength of the fingers, wrists and forearms, the hand grip strengthener improves overall grip strength and endurance. Useful for physical or occupational therapy and rehabilitation, the grip strengthener also increases mobility and flexibility in the hand and wrist, relieving painful arthritis, tennis elbow, tendinitis and carpal tunnel.