The Messermeister 1000/3000 Grit Water Stone is for regular use to keep your edges sharp factory sharp, and leaves a fine finish to the edge. Messermeister designed this stone for those who are interested in keeping a razor-like edge on their kitchen cutlery. The 1000 grit side is excellent for maintaining a very sharp edge. The 3000 grit side is great for finishing the sharpest edges with a polish. This stone provides a complete solution to maintaining the sharpest kitchen cutlery.