Our sliding door roller is suitable for sliding door roller, for interior sliding door or other furniture accessories. The sliding wheel set guides sliding door and allows the door to slide and save effort. This keeps the door balanced, prevents it from swinging and ensures proper operation. Easy and convenient to install, but professional installation is recommended.  Made of safe, sturdy and durable galvanized steel.  Double Galvanized Steel Casters Color: Silver Size: As Shown Quantity Sold: 1 piece Comment: 1. Due to different light and screen settings, the product color may be slightly different from the picture. 2. Due to different manual measurement, please allow slight size differences.