The BK Mueller, and ProLine 9-1/8" overall length stem for a 6" faucet.

The BK Mueller 888-571HC 9-1/8" OAL Stem is an integral part of many plumbing systems, especially in faucets and valves. Here’s a detailed description:

1. Manufacturer: The stem is produced by BK Mueller, a company renowned for its high-quality plumbing supplies.

2. Length: The stem has an overall length (OAL) of 9-1/8 inches. This dimension is crucial as it determines if the stem will fit properly within your specific plumbing fixture.

3. Material: The stem is usually made from a robust material like brass or stainless steel to ensure durability and resistance to corrosion.

4. Function: The stem is essential in controlling the water flow in faucets and valves. It operates by moving up and down to open or close the water flow when the faucet’s handle is turned.

5. Compatibility: This stem is designed to be compatible with certain models of faucets or valves. It’s always recommended to verify the compatibility with your specific model before purchasing.

6. Installation: The stem can be installed using basic plumbing tools. However, if you’re not comfortable doing it yourself, it’s advisable to hire a professional plumber.