PTP Adjustable Strength GripFor strengthening of the fingers, wrist & forearm. Designed to strengthen the fingers, wrist and forearm muscles, the ptp grip strength is perfect for tennis players, golfers and rock climbers that wish to enhance their performance and prevent hand injuries. Fostering tendon gliding, finger range of motion and dexterity, it is also suitable for those recovering from conditions, such as carpal tunnel syndrome and tennis elbow. adjustable resistance