A line of lightweight carts easy to maneuver and featuring sturdy poly-aluminum material with 3 shelves. The carts can be summed up as ''easy to assemble lightweight yet durable.'' a line of lightweight carts easy to maneuver and featuring sturdy poly-aluminum material with 3 shelves. Features: poly-aluminum construction, 150 lb. Weight capacity, and 3'' swivel casters. Raised lip on 4 sides of shelf. Built-in push handles. Some assembly required.