Silent nylon rollers provide smooth and quiet operation, allowing doors to open and close comfortably without noise. Made from high-strength nylon, high-speed bearings, and a durable alloy base plate, these sliding door wheels are built for long-term performance. The surface is coated with multiple layers of protective paint, offering enhanced resistance to rust, wear, and corrosion. The adjustable height design allows for easy installation and compatibility with various interior doors and windows. Featuring a cylindrical roller and horizontal rotation structure, the wheel glides smoothly without jamming. Each set includes 2 heavy-duty sliding door rollers measuring 85 x 45 mm, with a wheel diameter of 30 mm and mounting hole diameter of 6 mm. Classic black finish complements a wide range of door and window styles. Ideal for use on cabinets, wardrobes, closets, and windows. The high-quality nylon and alloy construction ensure reliable performance, smooth movement, and resistance to dust accumulation. Suitable for installation with 2 to 4 rollers per cabinet door depending on size and weight. Materials: Nylon and alloy. Color: Black. Package content: 2 sliding door rollers.