4" centerset deck mount lavatory mixing faucet with polish chrome plated brass body,4 3/8" swivel gooseneck with stream regulator outlet,1.2 GPM flow control in swivel piece,ceramic cartridges with check valves,4" wrist action handles,1/2" NPSM male inlets with compression nuts. Certified to ASME A112.18.1/CSA B125.1,NSF 61-Section 9 and NSF 372. Meets ADA ANSI/ICC A117.1 requirements.