GRS&reg; Tools 022-622 C-Max Carbide Graver Round Blank 1.8mm Pkg of 10 1.8 mm round X 2? long. C-Max carbide material Years of development have now produced a tungsten carbide graver with the right blend of hardness and toughness for hand engraving and stone setting applications C-Max achieves a metallurgical balance like no other carbide For years, engravers and jewelers have used other carbide gravers that break easily or dont hold a fine edge Try these tools and youll do better work in noticeably less time