Commercial-style kitchen faucet with spring + arm to hold the head which can be pulled down to wash large areas.One-handed control valve. Pull to the right to control pressure, push front and back for water temperature.SOLID STAINLESS STEEL faucet made of high quality 304 grade stainless steel.Cartridge Type: KEROX K35A 35mmCertified by Uniform Plumbing Code (cUPC)Recommended faucet hole diameter in countertop or sink to be 1 1/2"Estimated flow rate of 1.7 gallons per minute assuming flow pressure of 60 PSI.