CanDo Visualizer overdoor shoulder pulley with single pulley and door jamb anchor nub is used to increase should range of motion. Pulley with anchor nub is the most economical and lightweight shoulder pulley solution. Visualizer rope allows user to achieve specific pre-defined levels of ROM. It is color-coded by ROM from yellow (least) to silver (most). Each pulley has a swivel hook for seamless pulley action and large foam handles for comfortable grip. Extra-long rope can be used in the standing or seated position. Each exerciser comes standard with instructions pamphlet and retail packaging.