EFIELD 4″ Anti-Siphon Frost Free Sillcock 1/2″ Pex-A Expansion X 3/4″ Hose Bibb

4-inch length Anti-Siphon Frost Free Sillcock 1/2 inch Pex A Expansion X 3/4 inch Hose BibbAnti-siphon Design Prevents Water Backflow theft and Faucet Being Frozen in Cold Temp.Durable Chrome-Plated Body Against Corrosion;Multi-Turn Large Handwheel Allows for Easy On/Off OperationCertified ANSI/NSF Standard 61-9/372; Pex Ends Conform to ASTM F1807; Cold Working Pressure 125 PS