GRS 002-232 Tungsten Carbide Blank. These are much harder than any tool steel, but more brittle.They last up to 10 times longer between sharpenings when properly used. Sharpen with a diamond wheel. 085" (2,2mm) square X 2" (50mm). The item "GRS Tools 002-232 Graver Tungsten Carbide Blank (796E)" is in sale since Saturday, July 16, 2016. This item is in the category "Jewelry & Watches\Jewelry Design & Repair\Jewelry Tools\Engraving Tools". The seller is "barbaracw2" and is located in Billings, Montana. This item can be shipped to United States, to Canada, to United Kingdom, to Mexico, to Australia.