Prime-Line Matte White Plastic Closet Door Guide 2 pc

This is a top, center mounted, adjustable, roller assembly. The 1 in. flat nylon roller is attached to a stamped steel housing mounted on top of a 5/16 in. threaded steel rod. Used on Like closet doors 3/4 in. to 1-3/8 in. thick, it threads into a top bracket like Prime-Line part N 6797.