This is a set of sliding door roller, made of high-quality and durable steel, with a long service life. It has good load-bearing capacity and can serve you well. Good craftsmanship makes it slide smoothly and has a stable structure. It is widely used in industrial sliding doors. Features - Color:Silver. - Material: Steel. - Size: About11.00X4.50X4.00cm/ 4.32X1.77X1.57inch. - High-quality materials and good craftsmanship ensure its durability and practicality. - The installation method of this sliding door wheel is simple and saves time and effort. - This sliding gate roller can be used to replace old or broken sliding door wheels. - This sliding door wheel has a stable structure and provides you with a good using experience. - It is suitable for barn doors, indoor doors, sliding doors and so on.Package list: 1 Set x Steel Double Wheel Rail Hanging Trolley