Prime-Line 1 Inch Convex Nylon Roller Wardrobe Door Roller Assembly (Back) 2-Pack N 6513This is a single wheel, top hung, side mounted adjustable roller bracket with a 1 in. convex nylon roller that fits onto the back wardrobe door panel. The stamped steel adjustable bracket has a 3 4 in. offset and fits onto a 3 4 in. to 1 3 8 in. thick door. Primarily used on Cox door systems, it may also be found on a variety of other wardrobe door manufacturer's doors. For deeper offsets see Prime Line parts N 6514 and N 6515. Used primarily by Cox