Installation: the package includes mounting screws. Material: Door stopper is made of stainless steel, and the rubber material, which is durable and rust.Frosted making it concise and beautiful. Widely used: mounts on the wall for all residential applications, baseboards and doors; for home, bedroom, bathroom, office. suitable for any apartment, school or office, heavy door, glass door, balcony door or window sash and more If you receive any product quality problems, please contact us, we will provide you with the appropriate solutions until you are satisfied., Manufacturer: QHKNUYOAX