Proline 104-414 10" Frost Free Sillcock Sillcock valve Built in backflow preventer checks siphoning back into the water supply Sillcock drains automatically upon water shut off For use in residential or commercial buildings Solder or threaded water supply connections Heavy brass silver soldered construction, notched flange for stable installation Chrome plated casting and tube Lockshield 3/4-Inch hose thread outlet Heavy cast iron handle