Some welding required. Wheel Diameter (in.): 5, Caster Type: Rigid, Wheel Type: Steel, Capacity (lbs.): 1,000, Wheel Width (in.): 2, Foot Brake: No, Mount Height (in.): 6 1/2, Top Plate Dimensions L x W (in.): 4 1/2 x 3 7/8, Casters (qty.): 1 Base: 3 1/2in. x 2 3/8in.