This Polishing stone from the Messermeister brand is intended for frequent use to create an extra fine finish on extreme edges, leaving a mirror shine on the edge. Messermeister designed this stone specifically for those interested in maintaining a razor-like edge on their knives. The 2000 grit side is excellent for maintaining a very sharp edge. The 5000 grit side is great for polishing the sharpest edges. In short, this stone offers a complete solution to maintain the sharpest kitchen knives at an affordable price.