The BK Mueller and ProLine 10" overall length stem is for the 6" faucet. The BK Mueller 888-555 10" Overall Length Stem is a superior quality replacement part designed for BK Mueller faucets. This 10-inch stem is crucial in controlling the water flow in your faucet system. It’s made from durable materials to ensure longevity and reliable performance. The BK Mueller 888-555 10" OAL Stem is designed for easy installation and a perfect fit with specific models of BK Mueller faucets. Please verify its compatibility with your faucet model before purchase. This stem is an excellent choice if you’re looking to maintain the performance of your BK Mueller faucet system.