Fairbanks Angle-Iron Dolly, - 18in. x 30in., Model# AI-1830-4IW Tough, heavy-duty steel and open frame design make this model both durable and fuctional 2in. x 1-1/2in. x 1/8in. welded angle iron, flush to top frame Built to withstand tough factory, warehouse, and loading dock requirements Equipped with four double ball raceway swivel casters with semi-steel wheels Extra-heavy 2000 lb. capacity