4 DIFFERENT SPECIFICATIONS: According to different degree of thickness and various grinding speed, the sharpening stone can be divided into four types: #3000, #6000, #8000 and #10000. You can choose one among four types to match up with your tools. NATURAL STONE: The sharpening plate comes from natural stone, which is glossy and durable in use. The metal lines that have been polished are proved to be very soft and smooth, thereby polishing something fine and exquisite. DURABLE IN USE: The sharpening stone is tough and wear-resisting when using it to sharpen all kinds of tools. More significantly, it can be used for a long period of time. The powder doesn’t fall off and the stone is not easy to wear out. ADDITIONAL PURPOSE: Besides using it as a sole sharpening stone, it is compatible with professional knife sharpener. It can be well installed and fixed on the top of knife sharpener, so the polishing efficiency and accuracy have been greatly improved. MULTIPLE-USE: The whetstone sharpening kit has a wide range of application and it can be widely used in all sorts of kitchen and garden tools such as knives, scissors, chisels, shave knives, planes and other tools. Sharpening Stone, IMAGE Knife Sharpening Stone 3000/6000/8000/10000 for Sharpener, Whetstone Sharpening Kit Professional Sharpening Plate Grindstone, Scissors, Chisels and Carving Tools