Large Porcelain Mixing TrayLarge Porcelain Mixing Tray with moisture retention three glazed wells. It has a moisture retention function that ensures the porcelain will always receive the correct amount of water and remains in a workable state. It has a smooth surface that prolongs brush life. Unused porcelain can be stored and reused later. Saves porcelain and time. It comes with a clear plastic cover to protect porcelain from dirt or debris and provides a clear view of what is