1、Brass Material: This garden hose adapter is made of premium brass material, durable and long service life, perfect for garden. 2、Flexible Hose: Flexible hose allows adapters to get into tight spaces and minimize pressure on pipes and fittings. Easily connects to air compressors and garden faucets. 3、Compatible Models: Compatible with standard garden hose threads and air compressor quick connects common in North America. Provides cold protection for lawn sprinkler systems, faucets and pipes to prevent damage from freezing. 4、Blow Out Method: Adapters can easily winterize underground irrigation sprinkler systems, outdoor piping, water supply lines, pipes, homes, cabins, faucets, taps, garden hoses and hose taps with the blow out method. 5、Good Performance: Avoid problems caused by frozen water lines in the winter or spring with these sprinkler anti freeze kits. A healthier and more environmentally friendly anti freeze kit than those that use antifreeze.