Prime-Line N 6624 Door Roller, 1-1/8 in Dia Roller, Bottom Mounting, Steel

N 6624 is a bottom mount roller assembly for mirrored wardrobe doors. Used on Crest Door and other mirror doors, the roller assembly installs up into the bottom of the metal framed mirror door. The tab on the back end of the housing allows a screw to hold it in place while the adjusting screw can be accessed through a hole below the installation screw. The 1-1/8 in concave steel ball bearing roller allows the metal framed mirrored door to roll smoothly and effortlessly.