I purchased three of these sinks and had them professionally installed. There are quality control issues with this product. There are depressions to the left and right of the drain that prevents the water from fully draining. The result is water settling in these depressions and forming water stains as the water dries. And again, the product was professionally installed and the quality control issue is present on all three sinks that I purchased. That indicates to me that this is not an isolated incident with￼ one individual sink but appears to be an issue in the manufacturing process.  This may not be an issue for some, but for me it is.  I am now forced to live with issue or pay to have it removed, return the product, and pay to have its replacements installed.  Frustrating!