Used for finishing on material where hardness makes conventional files ineffective.Used by die and mould makers and for special manufacturing applications on materials such as hardened steel, ceramics, glass, graphite.2-300 flat, surfaces and edges parallel.2-301 flat, surfaces parallel, tapered point.2-302 3 square, tapered point.2-303 square, tapered point.2-304 half-round, tapered point.Coated with D126 diamond grit for use on hardened steel, ceramics, glass, graphite.Single packed in plastic pouches