Rely on the 4-Wheel Dolly Set of 4 by Pentagon Tools to support virtually any barrel in your garage or workshop. Each circle dolly is designed to accommodate up to 55-gallon drums and large trash cans weighing up to 1,000-pounds. The dollies with wheels are equipped with four 3-inch casters each so it makes moving around heavy weights simple and easy. Cross braces on the bottom of the 55-gallon drum wheels plus sturdy welding over the wheels ensure secure support for heavy loads, and the nonporous material holds up well to time without mildewing, rotting, or rusting for added durability.