This set includes a water stone with grain 6000, 1 small and 1 large guides and 1 receptacle. The water stone with grain 6000 is a stone meant to sharpen all Japanese knives. The small and large guides allow to give the blade a correct angle on the cutting-edge . The box included protects the stone and can contain it during sharpening ; the nonslip feet allow to work safely during sharpening operations This kit is also fit for people who never used a sharpening stone and the 6000 grain allows an excellent recovery of the cutting-edge subject to wear and tear . It is advisable to soak the stone in water from 10 to 15 minutes before using it. Stone dimensions: 210 x 70 mm.