High abrasion and high wear resistance lapping plate is more suitable for grinding metals with high tensile strength. Surface smooth with a dense structure makes the diamond lapping plate easy to sharpen even for beginners, simple and convenient to use at home. This diamond sharpener is for dry use, no need to add oil or water during sharpening, can be used at anytime anywhere. This sharpen stone set is suitable for rough grinding of knife (steel, high carbon steel, alloy steel), chisels, shovels, axes and tools. A must have tool for chef, hairdresser, gardener, carpenter, etc. Grinding and polishing plates can be used to rough, fine, fine grinding and polish knife, chisels, shovels, axes and tools used by households, chefs, barbers, gardeners, farmers, carpenters, metal workers and other customers grinding tools. Notice: Start sharpening from lower grit to higher grit can create better sharpening results.