Aquafaucet Waterfall Bathroom Faucet Brushed Nickel Single Handle One Hole Vessel Sink Faucet Lavatory Tall body Commercial Drip Free Ceramic Disc Cartridge For Smooth And Long Lasting Operation FAUCET:The Hole Diameter Of Your Sink :3.3cm-4.5cm(1.3''-1.77'') Could install this faucet or You have to drill the hole EASY OPERATION: Single lever design for effortless flow and temperature control FAUCET:Standard 3/8-In compression threads,Easy to install,hardware LIFETIME BREAKAGE WARRANTY&30 DAY MONEY BACK GUARANTEE: In case any broken problem happens, contact the seller of Aquafaucetwithout hesitation to solve the problem until satisfaction. Aquafaucet provides lifetime after sale service for all Aquafaucet faucet. Customers can return and get refunded for any reason. You have no risk to try.