SOLID BRASS CONSTRUCTION: Built from high-quality, lead-free solid brass for maximum durability, corrosion resistance, and long-lasting outdoor use. | 3/4-INCH STANDARD FIT: Designed to easily attach to standard 3/4" hose bibs, garden spigots, and outdoor faucets—no tools required. | BACKFLOW PREVENTION: Automatically prevents contaminated water from flowing back into your clean water supply; ideal for use with garden hoses, fertilizers, and chemicals. | VERSATILE USE: Perfect for residential irrigation systems, RV hookups, outdoor spigots, and hose bibs where water safety and compliance are required. | EASY INSTALLATION: Simple, tool-free installation—just screw it onto your outdoor faucet and enjoy peace of mind.