specification: Item Type: Finger Stretcher_x000D_Triangle Side Length: Approx. 12cm / 4.7in_x000D_Middle Ball Diameter: Approx. 5cm / 2in_x000D_Purpose: Finger grip exercise, recovery, leisure play, etc. Features: 1The finger stretcher is made of TPR material, which has sufficient elasticity and is not easy to pinch. 2Very suitable for adjusting the extensor muscles of the hand, preventing hand fatigue, arthritis and carpal tunnel syndrome, etc. 3Can provide your muscles with the necessary rehabilitation and strengthening training to improve finger flexibility. 4Adopts a triangular shape design, which conforms to the hand shape of most people, and has strong practicability. 5There is a ball in the middle of the hand grip strengthener, which is comfortable to grip and can achieve a better grip effect. PackageList: 1 x Finger Stretcher