Features:1. Uniform filing teeth: manual processing of filing teeth has uniform and consistent lines, high cutting efficiency2. Bearing steel material: GCR15 bearing steel material has high hardness and toughness, and the hardness is as high as HRC60. It is wear-resistant and durable, and is not easy to deform.3. Anti-slip handle: rubber-coated anti-slip handle, surface particle treatment, anti-slip comfort, ergonomic design and comfortable use4. Surface quenching: surface quenching treatment, enhance surface hardness, greatly enhance durability5. A set of files can solve a variety of troubles, and you can choose as wide as you want6. Boutique storage bag: each set of files is equipped with a storage bag for easy storage7. Superior performance: good heat dissipation performance, so that the surface of the workpiece will not heat up due to overheating, change color or leave residual glue during grindingProduct specifications:Product Name: Diamond FileBasic material: GCR15 bearing steelProduct advantages: high hardness, durable, not easy to wearProduct size: 14*0.3cmFile specifications: flat files, semicircular files, triangle files, square files, round files, knife filesScope of application: jade polishing, wood carving polishing, ceramic polishing, metal polishingGrinding and polishing of various stainless steel/copper/iron/aluminum/plastics and other metal and non-metal materials are good accessories for surface grinding treatmentHandle: plastic encapsulation processInstructions for use:1. The assorted file is made of bearing steel, hard and brittle, and the file is thin. It is strictly forbidden to press it down during use to prevent the file from breaking.2. Use one side of the new file first, and then use the other side when that side is blunt.3. When filing, always use a wire brush to remove the chips on the teeth of the file.4. Files cannot be stacked together.5. After use, it is recommended to remove the chips first and then apply anti-rust oil, which can extend the service life.You can choose:5* Needle Files Set10* Needle Files Set