Extruded Rubber D-Shaped Bumper with 2 Holes - 4 x 3-3/4 x 12 Inch Long Enhanced Content It features a sturdy cast

It features a sturdy cast steel collar and a standard 5/8 in

An air control option for directional control valves

Included mounting hardware

tie downs and pump enclosures

Extruded Rubber D-Shaped Bumper with 2 Holes - 4 x 3-3/4 x 12 Inch Long Enhanced Content It features a sturdy castBuyers Products Extruded Rubber D Shaped Bumper helps protect the rear of a truck or trailer when backing to an elevated loading dock. Bumpers are an ideal addition to any piece of equipment that has a high frequency of contact, such as a loading dock or delivery bay. The durable, heavy duty bumpers are available in a variety of sizes, thicknesses, and drill hole configurations to meet your specifications. Helps protect the rear of a truck or trailer