.Conductive Trash Can Dolly Features: Two of the Five 3” x ” Casters (CDP)3” are conductive; outer mounted for stability Industrial aluminum construction Wider than plastic dolly Solid aluminum hubs It locks on to the 44 gallon WBAS180 Transforming Technologies container. The 5 heavy-duty casters provide stability for loads up to 350 lb and two casters are conductive to provide a path to ground for ESD charges.