Dianova Diamond Sharpener DIANOVA LAPSTONE EXCLUSIVE has an ergonomically designed handle which is made from the exclusive curly-grained birch wood from Lapland. The design of the handle minimizes the risk of cutting yourself while sharpening the knife and maximizes the utilization of the whole grinding surface. The sharpener also has a genuine leather sheath with belt loop. Length 125 mm. Width 20 mm. / Diamond area 75 x 20 mm. 30 and 60 micron sides.