The Gripmaster PRO Series MEDICAL hand and finger exercisers represent the next evolution in hand and finger rehabilitative and strength training devices. Developed for larger hands, the PRO Series MEDICAL line has five (5) different resistance levels to choose from (3 lbs, 5 lbs, 7 lbs, 9 lbs, 11 lbs). The Gripmaster Pro MEDICAL isolates and strengthens each finger individually, helping you improve your overall strength, endurance, and dexterity after injury. A few daily workouts with the Gripmaster MEDICAL Pro and you"ll enjoy better control of a baseball/softball bat, tennis racquet, or golf club, with each finger working in seamless unity with the others. You"ll also find a ton of other uses for the Gripmaster Pro MEDICAL, including playing guitar or violin, rock climbing, bowling, target shooting, martial arts, yoga, or even relieving stress while clicking a mouse or gaming for hours on end. Many different exercises are explained on the company website.