This trash can dolly is built to handle heavy loads, the rubber covered plastic wheels give good grip keeping it where you want it to go rather than sliding all over on hard plastic wheels. The casters have ballbearings and move in the direction you want. This is designed for one or two Rubbermaid Commercial  "Brute" Heavy Duty barrels, they twist lock at the base and stay in place until untwisted. One side folds up when using only one Barrel but still moves easy loaded or not.