platform is adjustable from 27" to 73" in 2" increments. Platform trusses include a heavy-duty spring activated locking mechanism. All components are made with high strength Aluminium tubing. Includes one - Aluminium framed plywood deck with Aluminium support cross members. Includes four - 5" casters that have 250 lb. capacity and include both wheel and swivel locks. Maximum load capacity of 1000 lbs.