Ergonomic and comfortable, and lightweight, strengthen your forearm and wrist force anytime, anywhere. ABS material has high strength, corrosion resistance, high-temperature resistance, lightweight, wear-resistance, and durability, etc., which increases the service life of the product. Giant screen display, 42mm diameter, solid pointer display clear. By training the reaction and strength between the , the are more flexible, and the are more skillful and enhance the strength of the . Comfortable grip, Four fit, can make better use of strength. size:165 x 75mm Material:plastic colour:Blue+black Package Contents: 1 x Hand Grip Dynamometer Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.