... Nylon ) Bright galvanized steel. High quality and lowest price Description:residential door roller (2" White colour Nylon )2” 11 ball nylon ... for quiet operationIt can be used on garage door and residential door.They are good quality and safety.We can produce ... component, accessary/accessories, fittings, kits, nylon ,steel,rollers ,2”,3” residential door residential door roller (2" White colour Nylon )