The Polishing Stone is for frequent use to create an extra-fine finish on extreme edges, leaves a mirror polish on the edge. Messermeister designed this stone for those who are interested in keeping a razor-like edge on their kitchen cutlery. The 2000 grit side is excellent for maintaining a very sharp edge. The 5000 grit side is great for finishing the sharpest edges with a polish. This stone provides a complete solution to maintaining the sharpest kitchen cutlery at an affordable price. Please visit our online Media Library to watch an instructional video with specific instructions on "How-To Sharpen a Knife on a Stone."