SARLAI 21 inch undermount gunmetal black bar prep kitchen sink 1. Slope Bottom 5°: This design is our patent, this little slope can make water and garbage flow into the drain immediately, no need to remove them by hand. X guide line: good for 4 corners water flow into the drain, the line on our sinks are not reach to bottom, which avoid the drain hole being transformed to leakage.Round Corner: More lareger space+more easier in cleaning corner leftovers to prevent corner rust.16 Gauge T304 thick stainless steel, 1.5MM thickness, doing better in resisting dents and more sturdy and long lasting than 18 gauge thin sink. Gunmetal black color, fits charmingly with all style countertop Hardness 8H: which means this gunmetal black undermount sink performs excellent in resisting scratches and rust. Keep looking new after long term use.NANO PVD surface: The black undermount workstation sink can be clean on wipping, the oil/stain can be wiped out easily Full Body Stainless Steel Drain-Most durable Just need connect this drain set with your tube and your sink can start working. 10 inch deep sink 3.5 inch standard draining hole: perfect for all garbage disposal More size for you to select Quite Kitchen Sink With Thicker Pads With track for our customized accesssories 1.Extra 3mm thick sound-absorbing pads cover the sink base and around to absorb noise from dish washing and waste disposal. 2.Paint Coating prevents condensation build-up from damaging kitchen cabinets. 3.Drain hole is back side of the middle, more space under for source stock. PACKAGE: a cutting board/a rollup rack/bottom grid/drain assembly