The SCREW SLOT FILES by FRIEDR. DICK GMBH are designed for precision in making screw slots, offering six sizes and two styles for cutting thin European slots.
The product includes a matched pair of files, one Joint File for depth without widening and one Equalling File for cleaning and squaring the slot sides.
Files are delicate, very thin, and can be easily bent or broken; the manufacturer does not guarantee against this damage.