B & K LLC 888-573HC Frost Free Stem Kit

For anti-siphon, frost free Sillcock. Measurement listed refers to the length of the stem that is behind the wall. The overall length of the stem is roughly 4in longer. Suggestion for accuracy: measuring the overall length from end to end of the stem and then subtracting 4in to get the length needed for replacement. Product is manufactured in China . This product meets customer requirement.