I have had this part lying around for a while, it was never installed. It's the control valve which goes into the wall, along with the chrome shower handle and fixings to attach it all together. There is no shower head or water faucet in the box as I ended up using them (ironically the cheapest pieces). http://www.amazon.com/Kohler-Polished-1-handle-Single-function-Showerhead/dp...