All of our hose spigots have a 3/4" outlet. The outlet is the part that connects to your hose. This outlet would connect to a 3/4" garden hose (the internal diameter of the hose is 3/4"). We carry hose bibbs with 1/2" and 3/4" inlet's. The inlet connects to the home or building's water pipes. You would choose a 1/2" inlet if your water pipe's were also 1/2". If you can't find the size you need you can use an adapter to connect your hose bibb to your pipes or hose.
