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 p> Widely Used: Universal size, suitable for 75% of faucets. Can be used for single or double hot and cold water faucets. Ideal for bathroom and 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 Done. Easy to rotate and no dripping