The Wicked Edge 800/1000 Grit Diamond Stones are key to advancing your sharpening results to anything beyond a sharp working edge. These stones are perfect for finishing and maintaining blades to a super sharp edge. They allow any blade used for daily cutting tasks to perform better and offer a more refined edge for daily kitchen tasks like chopping vegetables. They are a necessary step in the sharpening process for anyone who is seeking a razor sharp finish with a highly polished or mirrored edge and are also perfect for touching up blades that have previously been sharpened by a Wicked Edge knife sharpener. For best results, they should be used after the 400/600 Grit Diamond Stones and before the 1500/2200 Grit Diamond Stones.