KRAUS Standart PRO Undermount Stainless Steel 21 in. Single Bowl Kitchen Sink Pine Post reversible knives deliver 30% more Aged Bronze Hardware reversible knives deliver 30% more knife life and make knife change fast and easy 4 column carriage lock drastically reduces the movement that causes snipe Extra long infeed and outfeed tables provide 33 1 2 in of material support Material removal gauge and extra large thickness scale deliver accurate cuts with every pass Turret depth stop allows user to return to their most frequently used depths with ease Simple 000 RPM brushless motor maintains power for demanding grinding tasks A: External: 21 in uninterrupted prep while the rear drain keeps the base cabinet beautifully open