1. Fits standard 4-inch square bumpers and will hide sewer hoses.

2. Used on RV, Camper, and Travel Trailer.

3. There is a square hole in the middle of the end cap, which is for ventilation and use for plug removal.

4. More durable material, as well as a more comfortable fit. These caps will last longer and will not fall off the end of the bumper during transport.

5. Material: ABS.