Durable steel base adjusts easily for ergonomic positioning of Lorell 60" x 24" tabletops. Height ranges 28" to 46-1/2" high. Lever-operated pneumatic mechanism raises and lowers it. Two-leg base includes two 57mm nylon, dual-wheeled casters on the back for easy relocation and two self-adjusting glides on the front for stability during use. Metal base features a powder-coat finish for durability. Weight capacity is 220 lb. Base includes mounting hardware for the tabletop (sold separately).