Prime-Line N 6870 Mirror Door Roller, Adjustable, Plastic

N 6870 is a paneled mirror door roller assembly with a concave nylon roller. Used on contractor's mirror doors, the grooved nylon roller rides on a track. The concave nylon roller is 1-1/2 in Dia. Note that the adjusting screw is centered on the top of the housing and the tabs on either side will insert into slots on that side and will be held in place by the existing screws.