Product Description Quartermaster brass Anti siphon frost free Sillcock. Quarter turn. 1/2" MIP and 1/2" solder. Meets ANSI/NSF 61-9. Chrome-plated brass body and tube. UPC approved, IAMPO approved. ASSE approved. Ceramic cartridge design assures long life. 3/4" hose thread. Pipe ends comply with ANSI B1. 20. 1. Hose ends comply with ANSI B1. 20. 7. Solder ends comply with ANSI B16. 18. Import. From the Manufacturer 1/2-Inch X 12-Inch Quarter Master Anti-Siphon Frost Free Sillcock.