Repair your leaky faucet with this Danco 7S-4D Stem Extension for Delta Faucets. Sometimes the shower valve faucet depth of the rough is incorrect due to a very thick wall. In these instance you will need shower stem extensions to make up the difference. This stem extension provides additional length for tub/shower stems. It is compatible with hot and cold water diverter applications. . This stem extension is designed for use with Delta Faucets and does not require a seat.