Denco Heavy Duty Rubber Trailer Bumpers are designed to provide reliable impact protection for semi-trailers, truck trailers, cargo trailers, and loading dock applications. Constructed from durable, weather-resistant rubber, these bumper blocks help absorb docking impacts and reduce wear on trailers, docks, and surrounding equipment. Each bumper measures 5.5" L x 2.5" W x 3" H and features reinforced metal-lined mounting holes with 2.5" center-to-center spacing for added strength and durability. Built for demanding commercial environments, these bumpers resist moisture, road debris, UV exposure, and temperature extremes, making them ideal for year-round use. Installation is simple and can be adapted to a variety of trailer configurations. The mounting holes may be drilled to accommodate your preferred hardware size, with Denco recommending 3/8" to 5/8" diameter bolts approximately 4" long, depending on your application. For maximum security, the use of threadlocker and/or nylock nuts is recommended. Hardware is not included. Sold as a pair, these heavy-duty rubber bumpers help protect valuable equipment, reduce maintenance costs, and provide long-lasting performance where dependable dock protection matters most.