The 11-ball precision bearing reduces rotational friction between roller, make your garage door quiet, smooth, and straight when opening and closing.
Roller is made of nylon material, wear-resistant, long service life. Shaft is made of carbon steel, not easy to damage, sturdy and durable.
The design is simple and easy to install, so you can quickly replace the old pulleys in your garage.
Suitable use to roller door in garage,warehouse,industrial and so on.
10pcs nylon garage door pulleys. Detailed dimension: the wheel diameter is 46mm(1.8inch), the wheel thickness is 14mm(0.5inch), the shaft length is 100mm(3.94inch), the shaft diameter is 11mm(0.4inch).
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