Our Combo Carts are the best way to store and transport Pipes, Bases and Drape. Each innovative combo cart dolly is designed to reduce set up time and to protect your investment. Their steel frames provide years of dependable service. To make moving your carts easier we feature casters with solid steel frames and ball bearing construction on both the axles and swivels. The casters are individually rated at 900lbs for a combined cart rating of at least 3600lbs.