KiaRog Single Handle Kitchen Faucet With Dual Function Pull Out Sprayer.Hot and Cold Mixer Touch On Kitchen Faucets.Brass Body.New Design.(Black) Including hot & cold water hoses G 3/8" compression ,Only fit for contemporary 3/8" water supply. If your Water Supplies are Old Style G 1/2" , you need to buy the G 1/2'' Adapters Yourself (G 3/8'' Male and G 1/2'' Female,you can buy it on Amazon) The Hole Diameter Of Your Sink :3.3cm-4.8cm1.3-1.88 Could install this faucet or You have to drill the hole Chrome & Ceramic Disc Valve: resist scratches and corrosion.High-arch Spout Design with 360-degree Rotation: offers more room for a variety of sink activities. The Tube is made of edible silica gel, Free to bend, Does not distort Dual Function Pull-Out Sprayer: aerated stream & powerful cleaning rinse.