The BK Mueller, and ProLine 11-1/8" overall length stem is for the 8" faucets.

The BK Mueller 888-572HC is an 8-inch replacement stem assembly designed for Anti-Siphon and Frost-Free Sillcock models. Here are the key details:

• Overall Length: 11-1/8 inches
• Material: Made of brass
• Compatible Models: Fits models 104-827HC and 104-847HC
• Use Case: Ideal for Anti-Siphon and Frost-Free Sillcock valves

It’s a crucial component for maintaining your outdoor faucets, ensuring they function properly and prevent freezing during colder months.