Winterize Sprinkler Systems and Outdoor Faucets: Air Compressor Quick-Connect Plug To Female Garden Hose Faucet Blow Out Adapter with Shut Off Valve (Lead-Free Brass) Adapter to easily winterize underground irrigation sprinkler systems, outdoor pipes, water lines, plumbing, homes, cabins, faucets, spigots, garden hoses, sillcocks, and hose bibbs by blow out method. Pre-assembled length: 11.5 inches (approximate). Pressure rating: 250 psi. Flexible hose allows the adapter to access tight spaces and minimizes stress on pipes and fittings. 100% outdoor rated, virtually indestructible, impervious to water and oil. Easily connects to air compressor and garden faucet to winterize lawn sprinkler systems, 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. For your health and safety, all metal parts are solid lead-free brass which contains less than 0.25% lead. Hose is 3/8" nominal diameter Insta-Grip, made in USA. Made in the USA with U.S. and global parts. Includes printed lawn sprinkler winterization instructions. This winterization tool is made from the highest quality parts. The shut-off valve is made from forged brass (not brass casting) for extra strength and durability. If you are looking for a heavy duty tool that lasts a lifetime, this one is for you! This blowout adaptor may also be used for winterizing RV, boat, watercraft, motorhome, camper, travel trailer, garden hose, drip irrigation system, soaker hose, waterline, piping, and various plumbing where applicable.