Features: High-quality material: This wrist strengthener is made of high-quality spring steel, which can be used for a long time, sturdy and durable. The strength adjustment sliding sleeve can slide up and down to adjust the strength. Forearms, Wrists Exerciser: Work out your forearms and wrists with this exercise machine designed for flexor and extensor muscles. Widely used: This hand exercise equipment can improve hand grip/finger/forearm/wrist strength, it can also be used to release daily stress and leisure activities. Thick sponge, anti-pressure and wear-resistant, easy to clean. Small size, easy to carry, exercise wrist anytime, anywhere. GREAT GIFT: Wrist strengthening equipment makes a great gift for athletes, fitness enthusiasts, professionals, rock climbers and tennis players. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Material: PP+carbon steel Size: 15*3.5*26.5cm Package List: 1 x Spring Wrist Exerciser