Orbit 67739 3-in-1 Drip Faucet Adapter Contains a pressure regulator, faucet to tubing adapter and a filter Attaches 1/2-Inch drip tubing to a Hose/Faucet - (.690, .700 and .710 O.D.) Regulates water pressure to 20 PSI Easy-to-clean filter screen For outdoor use with cold water only