KOHLER K-303-K Widespread 1/2" ceramic in-wall three-handle valve system with integral diverter and 8" centersThis ceramic, wall mount three handle valve system works behind the scenes to deliver optimal water performance through your faucet. A quarter turn rotation allows you to turn the water on and off with small movements, creating an ergonomic faucet. The valve features brass construction for durability and ceramic valving to keep your water running smoothly for years. 1 2" (12. 7 mm) quarter turn washerless ceramic disc valves Integral diverter