The product is light, portable and convenient for storage. Used for hand function damage and problemsHand strength rehabilitation exercise for the elderly and middle-aged peopleThe girth span is , suitable for more people.Force: 5-40kgFunctions: Finger strength, grip strength and wrist strength exerciseApplicable to: All of rehabilitation training and fitness of middle-aged and elderly peopleColour:random color , 't accept the specified colorMaterial:ABS plastic, manganese steelPackage Contents:1 x Grip gripOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.