Kingston Brass NB790SP Water Onyx  8 inch Centerset Kitchen Faucet with Lever Handle and Matching Side Sprayer, Black Stainless Steel High quality brass construction Durable washerless cartridge 8-Inch centerset 3-hole installation with additional hole for sprayer Max 1.8 GPM/6.8 LPM Water Flow Rate At 60 PSI (ASME standard) Compliant with California Energy Commission Title 20