ProX XT-CRANK18FT-500 18 Ft. Lighting Crank Truss Stand 500 Lb. CapacityThe ProX XT CRANK18FT 500 Heavy Duty Crank Stands are an integral part of the Truss SQ System for temporarily mounting lights for small to medium sized DJ lighting at any event. It has Integrated casters, independently adjustable leg braces, and nylon guided leg sliders, which can all be used in conjunction with another same rated stand, & trusses and T Adapters (sold separately). Each is made with Heavy Duty All metal components; Sturdy, steel