1. The valve body is made of brass, corrosion-resistant, durable, not easy to rust, anti-pressure and explosion-proof. It can meet the long-term water demand of the family. Waste of water resources.2. Solid brass valve body and stem. Handle spline (top of valve stem) has 20 teeth, valve stem drilled with M4 threaded holes.3. Red toroidal coil: Turn clockwise to open the faucet, counterclockwise to close the faucet. Blue Circular Coil: Turns counterclockwise to open the faucet and clockwise to close the faucet. Install the faucet according to the type of faucet you are using.4.First remove the decorative cover with a blade, then remove the screws with a Phillips screwdriver, then remove the handle, remove the old spool with a wrench, finally install the new faucet spool and restore the faucet handle.5.Suitable for basin faucet in bathroom, kitchen and other places. Suitable for cold and hot water.