Durable BuildConstructed from top - grade T12 carbon steel with 62 - 66HRC hardness. The teeth, deeply quenched and coated, resist wear well. This ensures long - term durability, making them reliable for diverse projects.Versatile FunctionApplicable to metal, wood, jewelry, plastics, ceramics, and glass. This 3 - piece set can handle filing, deburring, shaping, trimming, and polishing, meeting all your crafting needs.Easy MaintenanceMaintenance is a breeze. Just apply a little machine oil to the file surface. It helps keep the finish intact and extends the files' lifespan with minimal effort.Robust DesignMade with high - quality materials and fine manufacturing, the files are tough. Because of The teeth were deeply quenched and coated, the file cannot accept being droppedComplete SetThe set comes with an 8' Flat Metal File, an 8' Round Metal File, and an 8' Half - Round Metal File. It offers the right tools for any project, making it a great addition to your tool collection.