Ergonomic and comfortable, compact and lightweight, strengthen your forearm and wrist strength anytime and anywhere. ABS material has high strength, corrosion resistance, high temperature resistance, lightness, wear resistance and durability, etc., which increases the life of the product. Huge screen display, 42 mm diameter, solid pointer display clear. By training the responsiveness and strength between the fingers, the fingers are more flexible and the fingers are more skilful and improve the strength of the fingers. Comfortable grip, fits four fingers, can use the force better. Description: Material: ABS Range: 55 kg (55 kg are displayed when exceeded) Screen size: diameter 42 mm. Size: 165 x 75 mm. Measuring method: mechanical pointer Function: exercise the strength of the wrist and finger, and display the power value inclear. Package includes: 1 piece. Hand dynamometer grip strength gauge Note: Due to the different monitor and light effects, the actual colour may differ slightly from the colour on screen. Please allow 1-2 cm error due to manual measurement