Set Of 3 Heavy Duty Antique Vintage Barn Door Track Roĺlers Trolleys Wheel FarmSet Of 3 Heavy Duty Antique Vintage Barn Door Track Rolers Trolleys Wheel Farm vintage or antique heavy duty sliding barn door rollers or hangers. They are used with a track system to allow large barn doors or gates to slide open and closed. The three rollers appear to be made of cast iron or steel with a dark, weathered finish and signs of rust. Each roller has a wheel mechanism for smooth gliding along a rail. selling as pictured. more than welcome