material This chainsaw file is made of titanium, silicon carbide, and alloy materials. It is designed for metal polishing, especially for steel parts after heat treatment. The construction is durable with hardness. Even distribution of granularity Fine particle crystals with an even granularity provide smooth, efficient polishing. Abrasive grains resist coming off easily, contributing to a longer service life. Scope of application Designed for precision grinding and sharpening of ferrous materials, including chainsaw blades. It is suitable for chainsaw maintenance, stone carving, jadeite, glass, ceramic, wood, diamond, metal, and other polishing tasks. Durable design and compatibility Doublesided coating protection offers antioxidation and anticorrosion benefits. Compatible with various machines and suitable for models with a 3 mm shank diameter. Use scenarios Sharpen chainsaw blades and other ferrous tools to restore cutting performance. Finish metal parts after heat treatment to improve surface quality. Polish stone, jadeite, glass, ceramic, wood, and metal surfaces in crafts, fabrication, or installation projects.