3504070

This half-round (4x2mm) x 100mm long Ruby Midget File is extremely useful when involved in precision work with high detail. Ruby Stones are always the ideal choice for deburring, blending, dressing, and fine polishing of molds & dies made of hard metals such as hardened tool steel, carbide and surgical stainless-steels. Jewelers use them for sharpening of carbide and high-speed steel engravers and other tools.  Measures 4x2mm half-round x 100mm long (approx. 0.16" x 0.08” x 4"). Ruby stone dimensions have tolerance of ±0.1mm.