Rozin Single Hole Pull Down Sprayer Kitchen Sink Faucet Deck Mount Mixer Tap with 8" Holes Cover Plate Oil Rubbed Bronze Single Hole Deck Mount,Diameter of hole in sink should be 33mm to 45mm(3.3cm-4.5cm(1.3''-1.77'')) Cold and hot water,with two water supply lines,complete with mounting fittings Pull down spray,2-water model Cover Plate:Allows single hole kitchen faucet to be installed on 3 hole kitchen sink Rozin provides any replacement in future use,so contact unhesitatingly once you have any problem