Messermeister Two-Sided Sharpening Stone, 400 & 1000 Grit The Messermeister 400/1000 combination stone has been designed as an economical solution for traditional Eastern sharpening and maintenance of fine knives The 400 grit side will correct slight edge flaws and the 1000 grit side is excellent for both finishing and maintenance Silicone base for slip-free sharpening 100-Percent Messermeister quality