Lighting truss, wall or base plate, 6mm thick aluminium with male conicals. Pins and retaining clips also included. Extends the height of a stand by a negligible 6mm. Base plates are required for legs, generally it is not necessary to bolt base plates to the floor on 4 and 6 leg structures which are normally designed to be self supporting. Some structures such as a goal post may require additional support, base plates can then be bolted to large base plates allowing them to be free standing. Please ask for detail or a cad drawing we are happy to help.