The T-552 is a chrome plated brass multi-turn anti-siphon frost free sillcock in MNPT/Sweat x MGHT. This features an extended-hub so the handwheel moves the operators hand away from the sharp hose bib threads. It also features a anti-siphon vacuum breaker with internal check valve to prevent backflow into the system. A tapered wedge ensures easy installation in various sill types.