The handle stem painted with multiple electroplating, not easy to rust and corrosion Step 5: screw off the old cartridge with a wrench. Hot & Cold Water Valve: The hot and cold water valve core is distinguished by the red and blue marks on the handle. Handle rotation 180°. Step 3: remove the screw. It's can be used for single or double hot and cold water taps in bathroom or kitchen. Red is rotated clockwise to open the faucet, counterclockwise to close, and blue is opposite to red Universal Valve Core: Female thread diameter 30 mm, valve core diameter is 20 mm. Good Sealing: This faucet valve stem is sealed with a rubber gasket, seals the faucet well, does not leak, and saves water resources Phivan 4 Brass Faucet Handle Cartridge Replacement Stem 2 Pcs Quarter Turn 1/2 Replaceent Tap Valves Brass Ceraic Ste Disc... Kaffe Fassett Collective Classic Plus Lake Roll T And S Faucet Parts Replacement Brass Ceramic Stem Disc Cartridge Faucet Valve Slow Opening Pot Filler Can be used for single or double hot and cold water taps in bathroom or commercial kitchen. Packing Includes: 1x Cold Side Stem Assembly 1x Hot Side Stem Assembly Note: Please check the dimensions carefully before ordering to ensure compatibility with your model. Please refer to the picture dimensions before purchase Make sure the direction of the opening, it is clockwise or counterclockwise. Make sure it has threaded or no threaded. High Quality Material: The faucet spindle assembly is made of solid brass material, which is durable and rust-proof for long-term use.