Fabric Rack Casters (Set of 4)These high quality swivel casters are fitted with 5" polyurethane wheels and can be easily installed on our Six Roll or Three Roll Fabric Racks (#1720 and #1719). Larger wheels are designed to roll over debris commonly found in a composite production environment, so that even larger racksholding multiple fabricsremain stable. Each caster features a brake to stop and secure the rack in place while unrolling and cutting fabrics and films.