Introducing our high-quality plastic coated ball bearing for window roller, designed to provide smooth rolling support to your windows. Made with premium-grade materials, our ball bearing ensures durability and longevity, making it an ideal choice for heavy-duty window systems. As a factory, we take immense pride in delivering superior quality products that are affordable and perform exceptionally well. Our plastic coating ensures that the ball bearing is protected from rust and corrosion, increasing its lifespan and functionality. Trust us for all your window roller needs and experience a seamless and effortless window operation.