McKesson Caddy for Walker, 1 Each Biofeedback Units Accessories The 4¾ x 6 inch Procedure Mask Ultra Pleated The 4¾ x 6 inch gel pack conforms to contours around joints and other areas to provide adequate pain treatment Heavy duty vinyl with Permablok 3(R) bacterial protection * 1´ Firm density foam tops * Radiused seamless corners on upholstered components * Top sections have welded steel support frames * Pivoting joints house hardened steel shoulder bolts with locking nuts to ensure years of trouble free operation * Footswitch control * Power assisted caster system (unless noted otherwise) * 110 volts 60Hz motor (220 volts 50 Hz available on special order) * 500 lb Includes a removable top you can use to store personal items Raised sides prevent items from rolling off of tray