Main Features: Hand gripper Add counting function, hand strengthener could record your exerciser number when you use grip training. So you can know better your training progress and training results with counting number. Forearm grip Easy to adjust the resistance from 5-60kg as needs. The strength training equipment is suitable for everyone, like Athletes, sports, fitness, musicians,etc. People who want to exercise their hand, wrist and fingers.You can start grip training anywhere. Hand strength gripper, wrist strengthener Perfect for improving power and flexibility of forearm, wrists, fingers, hand ,and muscle building. Hand Grip Strengthener will bring you an excellent user experience. Specifications: Material: PP, TPR, Sainless steel Optional Color: Black Size:app. 16 x 11 x 2.2cm Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Hand Grip Compared with the traditional grip machine, it has increased the counting function. By rotating the strength adjustment button, you can easily and freely adjust the resistance of 11-120 pounds (about 5.0-59.9 kg) to meet different needs. Wear-resistant, rust-resistant, not easy to break, longer service life. It builds finger strength, arm muscles and grip strength, and is a great rehabilitation tool to increase finger and wrist flexibility.