STERLING B153-1 Secondary Sink 15-Inch by 15-Inch Top-mount Single Bowl Bar Sink, Stainless Steel 5-1/2" Basin depth 3-5/8" Drain opening One-hole faucet punching Made from 22 gauge stainless steel with a buffed basin finish and durable satin finish SilentShield, an exclusive sound-deadening system, reduces unwanted noise and vibration