1. Designed for: our winterize blowout adapter is designed for preventing freezing of garden water pipes, sprinkler systems, and faucets by blowing water from tap water or pipes, which is a convenient freeze-proofing method for you to use and help to reduce the use of antifreeze2. Standard threaded connection: this winterize adapter is standard threaded connection in most cases, designed with a 1/4 inch male air compressor quick plug to a male 3/4 inch garden hose inner thread, which is easy attaching air line to water lines or hose system, can help you to solve the winterization problem well3. Sturdy construction: the winterize blowout adapter is made of brass, durable and safe for you to use, with sturdy construction, it is not easy to break or deform, can serve you longer time4. Easy to use: our quick adapter fitting is easy for you to operate even though you have not enough experience, firstly, screw the water pipe to the female thread side and connect the quick plug to the quick coupling inside the air compressor line, then turn on the air compressor and rotate around the ball stem to open or close and adjust the air flow rate to blow dry water from the water pipe5. Where to apply: this brass winterize adapter is suitable for many systems (such as RV, camper, boat, travel trailer and so on that the vehicle with a water supply system) blow out or winterize with a male garden hose thread