file is a kind of file, which is electroplated with emery (emery is silicon carbide, hardness 95. It is composed of carbon and silicon by a covalent bond, no is hard, and no is expensive). It is a professional processing tool, quenched Cemented carbide, and gears. It is characterized by high , the use of files does not have the diagonal of general tool steel files, and theoretically no loss. The file can file almost anything, it can shake any turning plate, even the mysterious high-speed steel with a hardness of 69, but it cannot be used to repair large shapes. It can only be used to repair details. When using it, the file is along the edge of the blade. The direction can push and file a neat edge line. This product is made of high-strength and high-quality substrate electroplating. It is , wear-, high-strength, and has good physical properties, strengthening and wear resistance. Widely used in various molds, models, parts, handicrafts and other industries, such as: grinding, polishing, engraving, cutting, drilling, correction of jade, ceramics, glass, crystal, metal, hard alloy and other parts. A high-quality file set specially designed for hard-to-reach odd-shaped objects; Super hard industrial permanently embedded in the steel tip for excellent material removal; Shape aids for deburring, fixing broken glass, mirrors, tiles, ceramics and professional applications Hardened cemented carbide, high-hardness steel, ceramics, glass, etc. are perfect tools for the production and processing of workpieces in industries such as bearings, molds, and gears., Weight: 0.18849523401 pounds, Manufacturer: tiyao