Woodford 17CP3-12-MH Model 17 Wall Faucet Inlet CP3 inlet - 3/4 in. male pipe thread; 3/4 in. female sweat Faucet will not rupture from freezing when the faucet is shut off and the hose is removed (hose sold separately) Anti-siphon backflow device protects from any potential backpressure and contaminated water flowing back into the main line Stainless steel seat to prevent from leaking at the back of the faucet Rubber packing prevents leaking behind the packing nut