1Designed For: Our Winter Sprinkler Adapter is designed to prevent garden hoses, sprinkler systems and faucets from freezing by blowing water from the tap or pipe, a convenient freeze protection method for you to use and helps reduce the use of antifreeze. 2Standard Threaded Connection: This anti freeze adapter is a standard threaded connection in most cases, designed with a 1/4in male air compressor quick plug to a male 3/4in garden hose female thread, which easily connects the air line to the water line or hose system and can help you solve your anti freeze problem very well. 3Sturdy Structure: The anti freeze and anti spray adapter is made of brass, durable and safe to use, strong structure, not easy to break, damage or deformation, can serve you for a longer period of time. 4Easy to Use: Even if you don't have enough experience, our quick couplings are easy to operate. First, screw the water hose to the female side, then connect the quick plug to the quick coupling inside the air compressor line, then turn on the air compressor and rotate it around the ball valve stem to open or close and adjust the air flow to blow the water out of the hose. 5Scope of Application: This brass anti freeze adapter is suitable for many systems (e.g. RV's with water systems for vehicles, campers, boats, travel trailers, etc.) with a male garden hose blown out or winterized.