【 Precautions 】 Blue indicates that the faucet opens counterclockwise and closes clockwise . Red indicates that the faucet opens clockwise and closes counterclockwise 【 Wide Application 】 Blue cold side and red hot side spindle components are compatible with full brass faucets , height 3-1/8 inches (80MM) , with quarter turn cartridge and spring return 【 Easy Installation 】 No plumber needed , use a screwdriver and a wrench , you can install it yourself in as little as 5 minutes . Simply turn off the water , unscrew , discard the old cartridge , screw in the new one , and you're done 【 Brass Construction 】 The handle assembly is made of brass , providing sturdy construction , multi layer plated surface for rust prevention , and a more attractive appearance 【 Practical Design 】 It effectively addresses faucet leaks caused by long term scale buildup or broken internal or external cartridges . Replacing the cartridge in time can restore smooth work, Manufacturer: PATNFR