Prime-Line N 6840 Door Roller 7/8 in Dia Roller 1/4 in W Roller Steel 1-Roller

N 6840 is an adjustable top hung, side mounted bracket with a 1/16 in offset and 7/8 in flat nylon roller used on the front sliding door panel. It fits 3/4 to 1-3/8 in thick doors.