Diamond coating in length 70 mm. Grain size D91.
Strauss & Co. medium size NF needle files. belongs to the most requested and best-selling files. They are suitable for use on various metals and carbides, e.g. W carbide, steels from 40 HRC and above, ceramic materials, glass, etc. They are essential equipment in every tool shop, when punching and repairing cloudy alloy and ceramic materials. NF needle files have a circular shaft with a diameter of 3 mm, suitable for attachment to the handle.