excellent wheelchair accessible fitness machine designed to improve upper body strength targeting the muscles of the deltoids(shoulders) and triceps (rear arms) * Adjustable handles accommodate different user sizes for an optimal and precise workout * Oiled bushings assure a smooth and quiet operation * Non-skid safety floor plates stabilize chair mobility * The Parallel Dip is a free-weight plate loaded machine allowing 1 1/4 lb * incremental resistance changes. Standard weight plates not included (see options) with machine *