Camco's Magnetic RV Bumper Cap allows you to easily remove your sewer hose from your RV's bumper. The bayonet end of your sewer hose locks onto the cap, which pulls out the sewer hose when you remove it and also prevents the hose from sliding around in the bumper. It features high-strength neodymium magnets that keep the bumper cap in place; small vent holes provide airflow and double as an insect screen. The magnetic bumper cap is compatible with most metal 4-inch square bumpers and the lugs are compatible with any Camco bayonet-style sewer hose fitting. Includes a bonus no-insect bumper cap. Patented.