Used for hand dysfunction, small hand function impairment, finger strength and grip strength training. Features: The grip ball enhancer has low strength and good;durable, hand strength training toolelasticity, which is convenient for the 's grip and finger movement. The ball will not down, which is very suitable for training. Soft Press and high elasticity. It is equipped with six finger holes, easy to wear, and can adjust the tightness. Product Category: Grip Grip strength: about 5kg Specifications: Four-finger massage ball Name: Sub-finger thorn grip ball Applicable scene: fitness equipment, health massage classification: grip ball according to fitness effect: hand function colour:blue Material:TPR size:12x10cm Package Contents: 1 x Finger Exerciser Only the above package content, other are not included. Note: Light 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.