... galvanized steel. High quality and lowest price Description:Overhead door roller (2" Nylon )2” nylon roller4” zinc plated stemBulged shoulderRating: ... Xinsheng Machinery Factory. Index: garage door, sectional door, overhead door, industrial door, commercial door, section door, hardware, part/parts, components/ ... kits, nylon ,steel,rollers ,2”,3” residential door Overhead door roller (2" Nylon )