The Quik-Lok WS-550 Base Unit for WS-500 Modular Workstation System is a heavy duty, height adjustable stand. It's the essential component for WS500. The height of the legs to can be adjusted to suit your requirements. Also, adjust the angle of any of the legs to conform to any keyboard or synthesizer.
WS-550's available options are QL-634, QL-635, QL636, QL-636S, QL637, QL-638, QL-639, QL-648, QL-649, QL-650, WS-551, WS-552, WS-554.