4 Pcs Outdoor sports tools: 1 x Hand Grip Dynamometer & 3 x Spring gripper Easy to Carry Indoor and Outdoor, Such as Playground, Camping, Climbing, Hiking Ergonomic and comfortable, Compact and , strengthen your forearm and wrist force anytime, anywhere. ABS material has high strength, resistance, high-temperature resistance, , 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 ability and strength between the fingers, the fingers are more flexible, and the fingers are more skillful and enhance the strength of the fingers.Comfortable grip, Four fingers fit, can make better use of strength. SPRING GRIP BALL: Finger strength training, relieve fatigue, relax muscles, enhance finger flexibility, relieve hand fatigue, exercise hand strength,Anxiety Stress Relief Therapy for Adults and Kids STEEL BODY: made of chrome-plated carbon steel spring Material, Strong, , unbreakable, not easily damaged; With steel spring to exercise your grip strengthstrong elasticity, more comfortable to grip Rugby shape is born for the palm,suitable size can be grasped with one hand,3-in-1 multidirectional hand grip strengthener proven to promote strength, mobility, stress relief Stainless steel ergonomic non-slip grip, spring resistance for optimal grip strength training,practice palms, fingers, wrists, and resistance hand arthritis, making the fingers more flexible Colour:Silver+gold+rose gold+Blue+black Material:chrome+plastic Hand Grip Dynamometer size:165 x 75mm Package Contents: 1 x Hand Grip Dynamometer 3 x Spring gripper 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. Ergonomic and comfortable, Compact and , strengthen your forearm and wrist force anytime, anywhere. ABS material has high strength, resistance, high-temperature resistance, , wear-resistance, and durability, etc., which increases the service life of the product.Giant screen display, 42mm diameter, solid pointer display clear. Easy to Carry Indoor and Outdoor, Such as Playground, Camping, Climbing, Hiking 4 Pcs Outdoor sports tools: 1 x Hand Grip Dynamometer & 3 x Spring gripper By training the reaction ability and strength between the fingers, the fingers are more flexible, and the fingers are more skillful and enhance the strength of the fingers.Comfortable grip, Four fingers fit, can make better use of strength.