Curtain track runners are small, cylindrical plastic or metal rollers that attach to the bottom of a curtain and slide along a track to facilitate the smooth opening and closing of curtains. These runners help distribute the weight of the curtain evenly and reduce friction, allowing for a smooth and easy operation of the curtains. They are typically durable and long-lasting, and can be replaced if they become worn or damaged. They come in various sizes and styles to fit different types of tracks and curtains, and are easy to install. Supplied by TSA. For use with Medium Duty or Heavy Duty Track dependant on curtain weight & fixing.