These curtain track wheels are made of quality material, resistant to rust and corrosion. The curtain wheels fit for most rail and curtains.These curtain wheels hold the curtains sturdy, easy to and remove, good work with any color curtains. Material: PE, stainless steel-Durable and long-lasting use. The curtain track rollers can roll freely and slide smoothly in the rails.-Fit for curtain track. Easily move from track to track and from open to closed. Widely used in windows, closets, bedrooms, office, restaurants, sliding doors, etc.-Include enough curtain track rollers, which can meet your daily using needs.-Fine workmanship of our product ensures the long service life and delicate details.