This fitting is rust resistant and will be a perfect addition to your piping. Colors/finish: Starlight chromeMaterials: Brass, metalQuantity: One (1)Setting: IndoorDimensions: 2.17 inches long x 1.21 inches high x 2.17 inches wide Thermo-element 0.75-inch Wax elementFor Grohmix Thermostat Assembly required.Assembly Required