Rozin LED Light Pull Down Spray Kitchen Mixer Tap Single Hole Swivel Spout Sink Faucet with 8 Inch Holes Deck Plate Gold Polished Single Hole Deck Mount,Diameter of hole in sink should be 33mm to 45mm Cold and hot water,with two water supply lines Pull Down Sprayer,LED works by water flow,No battery is needed Cover Plate:Allows single hole faucet to be installed on 3 hole sink Rozin provides any replacement in future use,so contact unhesitatingly once you have any problem