... grinding woodworking tools,cutting tools, and etc. sharpening stone,combination sharpening stoneHand grinding and sharpening,mainly used for grinding woodworking tools,cutting tools ... ,code:GC ) Specifications: Use Aluminum Oxide stone for harder steels. Use Silicon Carbide stone for working on softer metals, such as ... also can be supplied in required materials,sizes and types. Knife Sharpening Stone