Features: Antifreeze blow out adapter is make of brass, strong and enduring. Flexible reinforced synthetic rubber hose, waterproof, with excellent heat, cold and corrosion resistance. Campers winterizing kits, equipped with standard 1/4inch air compressor quick connect plugs, 3/4inch male and female garden hose connectors. It can easily connect to marine, outdoor water sources and garden hoses, help to prevent damage due to freezing. The 16inch flexible freeze protection hose bends 270 degree to provide strength and durability. No additional tool required, just screw the connector onto the adapter with male/female threads and connect the other end to the air compressor.Then turn on the air compressor and rotate balls valves to adjust the air flows and blow out the water in the hose. Specifications: Materials: Copper and Rubber Total length: about 42cm/16.54inch Package Includes: 1set Winterizing Kits note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.