For jobs where a standard flat hand file, ref. 1-100, is too wide or too thick, e.g. for filing of narrow grooves.Easier access where a standard file is too large.Pillar file is a flat file of a slimmer design.For the manufacture of dies and punches, etc..Shape: edges and surfaces parallel.Type of cut: 1 = bastard, 2 = second, 3 = smooth.Surfaces double cut, one edge uncut, other edge single cut.Industry pack unhandled