These recessed rubber bumpers from Directed Solutions are engineered to protect doors, equipment, and hard surfaces from damage caused by repeated impact. The heavy duty rubber absorbs vibration and shock, while the built in steel washer provides reinforcement for dependable strength. Commonly used on shed doors, barn doors, sliding doors, truck bodies, trailers, cabinets, and large vibrating equipment, these screw on bumpers are ideal for both residential and commercial applications. Each unit includes a one inch mounting, zinc plated, self-tapping screw for quick and secure installation.