Inch and metric blank in drill indexes (Vermont Gage only) Indexes come with precision ground Jobbers length blanks ready for the cutter grinder! All H.S.S. blanks are heat treated to 62/64 Rc and marked with size. When you need a set of custom cutting tools and you want to make them quickly and cost effectively, use Vermont Gage drill and reamer blank sets. There is simply no easier, better, or quicker way to make quality cutting tools. * (-.0002 or -.005mm) tolerance. * Inch and metric diametric sizes * High speed tool Steel: 62/64 Rc * Jobber lengths * 10 microinch finish or better * Within .0001 round * Within .001 straight * Marked with size * Packaged in drill index MEDA Brand tolerance: +.0000 / -.0002" Vermont Gage tolerance: -.0002" or +.005mm)