Brass and metal construction</br>1/2-inch connections</br>Test cap and mud guard included</br>Required for installation of the Purist T97328-4 or Stillness T97344-4 bath filler</br></br>Product Description</br></br>Designed for use with the Purist and Stillness bath fillers?? this mounting block installs into the subfloor to firmly anchor the bath filler faucet.</br><br/>http://www.amazon.com/gp/product/B00W72YPI2