Caster WheelRepresents the swivel/multi-directional movement unique to casters. Trolley WheelA direct visual representation of a platform trolley or flatbed cart. PU Caster WheelRepresents the coating/layers, as PU wheels feature a tire layer bonded to a core. Heavy Duty Caster WheelRepresents heavy loads and high weight capacity. Light Duty Caster WheelRepresents lightweight application and easy maneuverability. Hospital Caster WheelRepresents a hospital bed, the primary use case for these hygienic wheels. PPCP Trolley WheelRepresents lightweight, durable PPCP construction for smooth trolley movement. Chair Caster WheelRepresents smooth, silent rolling designed for comfortable chair mobility.