Our DICK Titan Files have a special coating with a surface hardness of 72 HRc for very hard materials. No blinding, simply beat the file to clean the tooth from chipping. The coating also acts as a rust inhibitor. Lasts longer than an ordinary file. Easy to distinguish by its yellow tang. Available as precision and needle files. To be recommended for hard-to-workwith materials like stainless steel, titanium and nickelalloys, certain steel-alloys, polyester, copper-wolfram alloys, polyamide, acrylic etc..