Support No Additional Tool Install - Complete tool accessories. 3/8" Cold & hot water lines. can fit most US kitchen pipe. (The faucet come with professional English Installation Manual document on the details page of the product. )Tip-Top Quality Material - Solid brass construction , SEDAL ceramic disc cartridge and superior aerator formed the faucet, lay the foundation for long-term use.3 Way Kitchen Faucet - Include Hot & Cold and RO water (under sink filtration system ) faucet function for save your space and money.The faucet has 1/4" filter water tube connection adapter and 3/8" adapter for the RO reverse osmosis system, you can choose the suitable size to use.Dual Function Sprayer - Two spray modes allow you to easily toggle from splash-free aerated stream & powerful cleaning rinse.Commercial Pull Down Design - 24 inch Pull Down Hose Easy to clean the sink without blind spots and fit almost any kitchen cabinet. Superior corrosion & rust-resistant finish prevent dirty from sticking to faucet surface.