Aquaterior Single-hole Bathroom Faucet features a retro look, bringing industrial style Brass body with oil rubbed bronze plating resists rust, corrosion; Equipped with Upgraded Ceramic Cartridge for leak-free design Operate with single handle for water temperature adjustment & flow volume control Compatible with 1 or 3-hole above-counter sinks, undermount sinks; Features a unique square nut for easy installing Being CUPC, CEC & NSF certified, it comes with a 5-year warranty for any quality issue