Finger trainer: especially for finger rehabilitation training, functional exercise of the long thumb tendon, prevention and correction of finger stiffness, wrist extensor and stretching tendon, suitable for wrist and finger dysfunction, finger weakness and pulse, hand fall (Radial nerve injury), tendon repair or postoperative exercise.Strength training: focus on personal finger strength to solve problems neglected by traditional hand tools, strengthen your muscles by stretching your hands, help reverse the problems caused by the grip and squeeze life cycle and effectively relieve numbness of the fingers.?Promotes blood circulation, inhibits deformation of the fingers and prevents flexion of the fingers.High quality materials: manufactured with aluminum alloy frame, tension spring, sponge pad and breathable curved plastic plate material, detachable cloth cover for easy cleaning.