Dual Functionality: Special designed RV bumper end cap prevent it from opening while RV going down the road, serves as both a protective cover for your RV bumper ends and a secure storage solution for your sewer and other essentials, so the sewer hose not fall out of the bumper and being dragged causing damage Universal Fit: Designed to fit standard 4-inch square RV bumpers, these RV bumper end caps provide a perfect seal for your RV's rear bumper openings, also you can conceal sewer hose inside the bumper end Material: Crafted from material, our metal sewer hose storage caps are more sturdy and long lasting than other plastic covers, as well as being a more snug fit Air Vents Design: Small but more vent holes allowing efficient airflow and keep bumper dry, also prevent leaves and debris from entering the bumper, while keeping insects out of your bumper storage tube Easy Installation: You can attach the non-slip rubber pads to the inside of the cover bezel to fit better, snap the bumper caps onto the ends of the RV bumper, tighten the fixing screw, fasten the safety chain, then insert the pins to complete the installation Color: Black Material: Metal Package Contents: 2Pcs 4inch RV Bumper End Cap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.