The Manfrotto Video Monitor Tray 311 is designed to attach a small video monitor onto a light stand. It uses two heavy-duty straps to hold the monitor in place, and contains a 5/8" receptacle that fits standard light stands using a 5/8" spud. The Tray can also be used with the Super Clamp system, in conjunction with the Double Ball Joint (2916), Magic Arms (2929) or (2930), or Extension Arm (2906).