1307346 Mixer Cap Sp Kit and GP800820 Pressure Balancing Unit Cartridge Compatible with Rite-Temp Valve and K-304 Shower Valve, Remember to Lubricate all the O Ring Rubber Parts Before Installing, To Remove Limescale From Inside and Outside, Avoid Leakage Caused by Scale Features: Solve leakage and dripping and cold and hot water mismatch problem Control pressure,Adjust temperature Specifications: Material: Plastic, Brass Color: Black