Thermoplastic polyurethane (TPU) wheels have similar advantages to rubber— they roll quietly and won't mark floors— but are longer wearing and have superior chemical, oil, and abrasion resistance. The injection molded TPU is mechanically bonded to a polypropylene core, making the wheel lighter and more economical than alternatives with metal 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.