Get built and improve your coordination at the same time with the Dynaflex Pro gyro wrist exerciser.Designed with a high performance rotor, the gyro wrist exerciser improves coordination while building strength in your hands, wrists, forearms, biceps, and triceps. Useful as both a therapeutic device and a muscle conditioner, it increases the range of motion of your wrist flexors and extensors. Ideal for those suffering from Carpal tunnel or tennis elbow, it makes a great gift for the fitness nut in your life.Click on Overstock.com for one-stop shopping on all your exercising needs.Features include:Aids in sports rehabilitation and conditioningUp to 13,000 rpm motorUp to 38 lbs. of torqueIncreases range of motion in flexors and extensors