Low-cost, simple-to-use device. Increases and maintains range of motion in all planes of shoulder motion. Allows patients to increase the gains made in the clinic, and speed up the recovery process. This is our Basic, Economical Shoulder Pulley. It comes as pictured in a zip lock bag. Non Electric. Human Powered, does not use a power source to operate Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.