The CanDo Wrist/Forearm Exerciser allows the practice of repetitive functional movement to rehabilitate the wrists and forearms. Use it to practice exercises such as flexion, extension, pronation, supination, as well as ulnar and radial deviation in the hand and wrist. It is perfect for patients just beginning rehabilitation because of how little physical strength is needed to be used. Use this semi-sphere by itself or pair it with a CanDo handle for the complete range of motion experience. This extra small semi-sphere comes black in color and is sold individually.