Danze D112500BT Single Control Washerless Cartridge Pressure Balance Mixing Valve with Screwdriver Stops Smooth action washerless cartridge with solid brass stem Adjustable temperature limit stop to reduce the risk of accidental scalding Combination 1/2-Inch copper sweat/IPS 4-port hook up Mounting bracket and plaster guard included Solid brass construction  including solid brass screwdriver stops