Description This item is a spring grip device, which is made of premium spring steel material, durable and comfortable to use. The hand grip can prevent stiffness, increase flexibility and reduce joint . Perfect hand workout that can be done in your home or office and will build your hand muscles and grip strength. Features - Material: Spring steel - Size: 12.00X8.50X2.00cm/4.72X3.34X0.79inch. - Made of premium spring steel material, it has resilience. - It can improve strength, power and in the wrists, fingers, forearms, hands. - Nonslip design is soft, convenient and durable for frequent and repeated use. - Portable, lightweight, easy to carry. Rehabilitation and relief use hand enhancers. - The ring design can perfectly fit the palm shape, comfortable to grip. Made of premium spring steel material, it has resilience. It can improve strength, power and in the wrists, fingers, forearms, hands. Nonslip design is soft, convenient and durable for frequent and repeated use. Portable, lightweight, easy to carry. Rehabilitation and relief use hand enhancers. The ring design can perfectly fit the palm shape, comfortable to grip.