About dimensions: the threaded connection is in standard design, suits for most conditions, with a 1/4 inch male air compressor quick plug to a male 3/4 inch garden hose inner thread, easy attach air line to water lines or hose system, which can help you solve the winterization problem easily Durable and solid: made of solid brass, the color is not easy to fade and it will not break or get deformed easily, offer you long service time Suitable applications: suitable for many water systems blow out or winterize with a male garden hose thread, the vehicle is designed with a water supply systems, such as RV, camper, boat, travel trailer and so on, which can save you much time and effort How to use: easy for you to operate, 1. just screw the water pipe to the female thread side and connect the quick plug to the quick coupling inside the air compressor line; 2. Turn on the air compressor and rotate around the ball stem to open and close; 3. Adjust the air flow rate to blow dry water from the water pipe Package content: package comes with 1 piece winterize blowout adapter, which can be applied for preventing freezing of the garden water pipes, sprinkler systems and faucets by blowing water from tap water or pipes, which can decrease the using of antifreeze