Winterize Sprinkler Systems And Outdoor Faucets: Air Compressor Quick-Connect Plug To Female Garden Faucet Blow Out Adapter Fitting (Solid Lead-Free Brass) Blow out plug adapter fitting to easily winterize underground irrigation sprinkler systems, outdoor pipes, water lines, homes, cabins, faucets, spigots, garden hoses, sillcocks, and hose bibbs by blow out method. Its short and stubby design allows access to tight spaces. Quick-connect attaches to air compressor. Compatible with standard garden hose threading and air compressor quick-connect commonly found in North America. For your health and safety, this sprinkler winterizer is made of lead-free brass which contains less than 0.25% lead. Lead-free brass costs about 30% more to manufacture than regular brass but we have decided to absorb the additional cost and maintain the same retail price in order to promote the health and safety of our customers. Lead-free brass is also harder, stronger, and more durable than regular leaded brass. Always wear safety goggles when handling or using compressed air. Easily connects to air compressor and garden faucet to winterize lawn sprinkler systems, drip irrigation system, soaker hoses, faucets, and plumbing to prevent damage due to freezing. Compatible with standard garden hose threading and air compressor quick-connect commonly found in North America This heavy duty winterization tool is machined from a solid lead-free brass casting. If you are looking for a quality tool that lasts a lifetime, this one is for you! This blowout plug may also be used to winterize recreational RV, boat, watercraft, motorhome, camper, travel trailer, waterline, piping, and various plumbing where applicable.