Some welding required. Wheel Diameter (in.): 6, Caster Type: Swivel, Wheel Type: Steel, Capacity (lbs.): 1,000, Wheel Width (in.): 2, Material Type: Steel, Foot Brake: No, Mount Height (in.): 7 1/8, Overall Height (in.): 7 1/8, Top Plate Dimensions L x W (in.): 4 9/16 x 3 15/16, Bolt Hole Spacing: 3 1/4 x 2 5/8, Casters (qty.): 1