Description: Anti Freeze Blowout Adapter: The RV Winterize Blowout Adapter Kit is designed to prevent garden hoses, sprinkler systems, and faucets from freezing by blowing water out of pipes or pipes. Standard Size: RV Winterize Blowout Adapter comes with a 1/4 inch male air compressor quick plug that connects to a 3/4 inch male garden hose internal thread. Wide Application: This adapter is suitable for garden hoses, sprinkler systems, water supply systems for RVs, campers, boats, and travel trailers. Material: The winter adapter is made of brass, with a sturdy structure, , able to withstand high temperatures, not easy to break, and can be used for a long time. Easy to Use: RV Winterize Adapter is easy to operate, just screw the water pipe to the internal thread side, connect the quick plug to the air compressor pipe, then turn on the air compressor, adjust the air flow, and blow out the water in the pipe. Size Chart: 8.4cmx3.8cmx3cm/3.31inchx1.50inchx1.18inch Package Includes: 1 RV Winterize Blowout Adapter 2 washers 1 cloth Note: Please allow slightly errors due to manual measurement and different monitors.