A diamond-sharpening stone from Grainger can help you easily sharpen knives and other tools in your shop or on your workbench. Help maintain a sharp edge on scissors, scythes, knives, plane blades, chisels and more with these diamond whetstones. Choose from a wide range of grades from extra fine 9-micron grit to extra coarse 60-micron grit. You'll even find several fine/coarse combination diamond-sharpening stones. When you need to hone sharp edges, find the right diamond-sharpening stone at Grainger.