JET DD-55 Steel Drum Dolly, 55-gallon Strong and durable dollies easily transport up to 55-gallon drums Welded steel frame with 3-1/8-Inch cross straps Feature powder coat finish Heavy-duty zinc plated casters feature double race bearings Non-marking 3-Inch by 1-1/4-Inch polyolefin treads that resist oil, water and impact