This is a push button diverter valve for connecting a handheld shower unit in between your main faucet body, and vertical shower riser tube. This allows your bath to have both a stand-up shower, as well as a hand held shower sprayer installed at the same time.
This push button diverter will allow you to switch between them as desired.
This part is available in your choice of finish.
Just choose your finish option, and click the "Add to Cart" button below.