Kyoto Otani Toishi Seisakusho Nakatoishi Kitayama Dimensions: Length 208mm, Width 68mm, Thickness 33mm Manufacturing Method: Resinoite Method (Resin Molding Method) Grit: Medium Grit Stone (1000#) Due to the blending of natural stone powder, it has a sharpening feel and finish close to natural stones. Because of the Resinoite method, please refrain from soaking the whetstone in water for a long time. There is a possibility of softening or cracking due to the deterioration of the bond. Application: Intermediate sharpening of blades Available for immediate purchase.