Easy twist-on/twist-off waste container mounting. 350-lb. load capacity. Swivel casters offer better mobility through the workspace. Heavy-duty 3" casters. Color(s): Black; Dolly Size: 18" dia x 6 5/8"; Capacity (Weight): 250 lbs; For Use With: Brute? 32-Gallon, 44-Gallon, and 55-Gallon Round Waste Containers.