The Blickman 8871SS (Benjamin) foot-operated Mayo Stands are number one in ease and convenience. Just lift the tray frame – it automatically locks. To lower, hold the tray frame and press the foot operated control button. Release to lock in place. A guard over the foot button prevents accidental release. Our state of the art double post design minimizes lateral movement and increases overall unit stability. Select our Model 8871SS, double-post jumbo Benjamin Mayo Stand when a larger tray size is required. The 8871SS is height adjustable from 39-1/2″ to 62″ with a tray size of 20″ x 25″.