High Quality: Ceramic faucet head made of high quality solid brass and ceramic, durable and long lasting. Works perfectly, can be used for a long time Size: Length: 53mm, Outer Diameter: 7.6mm, Inner Diameter: 4mm. There are 20 teeth on the top of the valve Easy to Use: Clockwise and counterclockwise to close or open the faucet Widely Used: Universal size, suitable for 75% of the faucet. Can be used for single or double hot and cold water faucets. Ideal for bathroom, kitchen Easy to Install: 2 faucet heads (1 * blue and 1 * red) with 2 * 4mm screws, use 1 * Allen key, 1 * screwdriver and 1 * wrench work done. Easy to turn and no drips