Powerball Sports Pro Gyro Exerciser is a perfectly balanced gyro capable of reaching speeds in excess of 13,000 rpm all powered simply by your own hand! Our Powerball Sports Pro Gyro exerciser is a proven tool in the prevention & elimination of Carpal Tunnel, Arthritis, Tendonitis, Tennis Elbow and other Repetitive Stress Injuries (RSI). This Product is an ideal tool to help increase flexibility, mobility and range of motion in the hands and wrist. Whether you want to take your game to the next level, need to recover from a hand or arm injury, or simply want to sculpt, shape and tone your body -- the Lineup of Gyros are the fitness breakthrough you've been waiting for! These remarkable Fitness Gyro Exercisers are so small they go anywhere, yet so powerful, you'll see and feel results in just minutes! Ideal for all swing based sports or any sport that requires the use of your hands, wrists and arms. This is perfect for not only rehabilitation but for toning, strengthening, and conditioning. The Powerball Sports Pro Gyro is packaged with the gyro training cd and starter cord.