Nantucket Sinks 25" inch single bowl granite composite sink is a stylish way to get the job done. A dual-mount design allows it to be installed as a top mount or an under-mount. 1 precut hole for faucet installation. At 12 inches high, the basin is deep and ready to help with the washing. With benefits long known to design professionals, this sink is 80% natural stone which helps it to be both resistant to stains and scratches. It withstands thermal shocks and temperatures up to 560 degrees Fahrenheit. Drain is sold separately. Stone is naturally sound-absorbing. The beautiful flecking throughout the sink gives depth and eye-catching color! Please tighten the drain by hand during installation to avoid cracking the sink. Please note that the small holes on the underside of the basin are from the mold when the sink is poured and are not defects - they do not affect the sink's performance.