【10 Different Styles】SI Fang diamond files, 10pcs/lot assortment, 10 different shapes, including (flat tip, oval, round, knife, square, round, triangular, semicircle, triangle, flat square). Suitable for all kinds of grinding, necessary for model making, strong and durable. Great choice for grinding various metals and jewelry, perfectly meet all your needs. 【Multi-use】Diamond needle files are suitable for filing metals at high hardness, such as cemented carbide, hardened or nitrided tools, alloy steel tools, deburring, shaping, chamfering, polishing, etc. They can also be used for processing non-metallic materials such as glass, ceramics, jewelry, jade, etc. Material: The sharpening tools are made of high-quality carbon steel and coated with diamond sand. The electroplating process ensures that the surface is firm and does not lose sand. The diamond is firmly fixed on the file, and the file is sharp, resistant to wear and durable. Product Benefits: Remove flash and mold lines from