These 5" heavy-duty caster wheels are designed for compatibility with the Vevor insulated food pan carrier and come as a set of four. The set includes two swivel casters with brakes and two rigid casters for stable, flexible transport. Built from high-strength composite material, the wheels are designed for strong load capacity, quiet operation, and reduced floor wear. The galvanized iron brackets help resist rust in humid commercial kitchen environments. They are intended to make heavy-load transport easier in back-of-house and delivery settings.