National Hardware N344-911 Guide Roller, Steel

V391GR Series Zinc Plated Folding Door Spring Top Guide With Roller. Stays In The Track And Adjusts To Door Frames That Are Not Square. Helps To Ensure Smooth Operation. Manufactured With Cold Rolled Steel And Nylon Roller. Has A 7/16 Inch Diameter And Should Be Recessed 2 Inches Deep. Spring Loaded.