Durable nylon garage door rollers with a 4.5cm-12.0cm stem (set of 4 (120MM garage door roller 4PCS))

Function: Equip your garage door with this electric door roller that ensures smooth and efficient operation for easy entry and exit. [Material] This pulley is made of metal and nylon, which improves durability and lifespan and meets the demands of daily use. [Size] This pulley has a diameter of 46 mm and a length of 120 mm, fits most standard garage doors, and is available as a replacement or upgrade. [Package] The package contains 4 electric door rollers, perfect for replacing old, worn, quiet, or damaged rollers.