HIGH-QUALITY MATERIAL: This RV winterize blowout adapter is made from brass, which is durable and resistant to corrosion. It can withstand high temperatures and features a sturdy construction that resists breaking or deformation, ensuring long-term use. KEY PURPOSE: This tool is designed to help winterize garden hoses, sprinkler systems, and faucets in vehicles with water supply systems, such as RVs, campers, boats, and travel trailers. It works by blowing out water from plumbing lines to prevent freezing in water pipes, sprinkler systems, and faucets. This fitting is suitable for use in various water systems. STANDARD SIZE: Features a 1/4 inch male air compressor quick plug and a female 3/4 inch garden hose thread (GHT), along with a 1/4 inch male quick connecting plug and a 3/4 inch male GHT thread. This standard sizing ensures compatibility with most common connections. EASY TO USE: Step one: Screw the water pipe onto the female threaded side and connect the quick plug to the air compressor line’s quick coupling. Step two: Turn on the air compressor and adjust the ball valve to control airflow, effectively removing residual water from the system.