Used for heavy-duty purposes where conventional files are ineffective.Suitable for materials such as hard metals, hard plastics, graphite, epoxy, etc..Four different shapes, similar to conventional precision files.5-600 Flat, surfaces and edges parallel.5-610 Half-round, surfaces parallel, tapered point.5-630 Round, tapered point.5-670 Three square, tapered point.Shaped section of the file (approx. 110 mm) is covered with diamond grit (D126).Integrated handle for easy use.Single packed in plastic pouches