Polyurethane-on-aluminum caster wheels feature a corrosion-resistant polished aluminum core and a chemically bonded polyurethane tread that is non-marking, smooth rolling, and highly durable. These wheels provide reliable performance even when exposed to oils and chemicals, and the total equipment weight is lower than alternatives using iron cores. This caster's swivel rig aids maneuverability through turns, and the side lock prevents rolling during loading, unloading, and other operations where stability is required.