The 16inch flexible freeze protections hose bends 270 degree to provide strength and durability It can easily connecting to marine, outdoor water sources and garden hoses, help to damage due to freezing Campers winterizing kits, equipped with standard 1 / 4inch air compressor quick connecting plugs, 3 / 4inch male and female garden hose connectors None additional tool required, just screw the connector onto the adapter with male / female threads and connecting 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 Antifreeze blow out adapter is make of brass, strong and enduring Flexible reinforced synthetic rubber hose, waterproof, with excellent heat, cold and resistance, Manufacturer: TFAOYS