Easy to Use: First screw the blow out plug for RV antifreeze into the city water inlet, then connect the air pump, and finally open the drain pipe and faucet for a quick antifreeze process Efficient Winterization: Simplify the task of antifreeze and protect your RV water lines with this camper blow out plug, making it easy to prevent water pipes from freezing Durable Brass Material: This RV blow out adapter is made of corrosion resistant and oxidation resistant brass, ensuring durability and reliability for long term use Wide Range of Applications: This RV winterization valve is not only suitable for RVs, but also antifreeze sprinkler systems, drip irrigation units, faucets, hoses, and more Eliminate Safety Hazards: This RV antifreeze accessory eliminates the risk of water pipe bursts in the winter; Protect your travel trailers from serious damage caused by freezing water with this essential RV blowout plug The RV brass blow out plug is used to help clear RV water lines and prevent the water pipe from being during winterization and dewinterization The RV winterize blow out adapter is made of premium brass material, wear resistant, sturdy, and ensures a long time to use The RV winterization valve is easy to connect and install, suitable for most RV water inlets The RV blow out plug is suitable for campers, motorhomes, travel trailers, boats, garden water hoses, drip irrigation units, sprinkler systems, faucets, etc Color: As Shown Material: Brass Package Contents: 1 RV brass blow out plug set