The Promethean AP-AF-TR-CASTOR is a genuine replacement castor wheel kit designed for the Promethean AP-AF-TR Mobile Display Trolley. Engineered for smooth mobility and reliable performance, these durable swivel casters allow compatible interactive displays to be moved effortlessly between classrooms, conference rooms, and collaborative workspaces. Built for long-lasting use, the replacement wheels help maintain the trolley's stability, maneuverability, and overall functionality.