Adler single metal handle lavatory faucet with 50/50 pop-up. 1.2 GPM (gallons per minute) flow rate. Solid brass construction, brass waterways, washerless cartridge. 4" centerset, 1/2" I.P.S. connectors. For replacement cartridge see Model No 1255 (SKU 464438). ADA, CSA, and NSF certified. Chrome finish.