EFFECTIVE FILE: The abrasive particles are evenly distributed on the sharpening burr, delivering stable and efficient sharpening with improved precision and workflow efficiency. PRACTICAL USE: Chain saw stone files are versatile for grinding, processing, repairing, engraving, line cutting, and welding burr removal. Their practical design makes them suitable for both professional work and DIY projects. BROAD UTILITY: Designed for flexible application, chain saw grinding heads are compatible with 7/8 inch wheels and large chainsaw chains such as 404 and 3/8 inch chains, enabling a wide range of cutting and sharpening tasks. EASY TO CHANGE: Specifically designed for electric grinders, the chain saw grinding tool can be easily changed in just two steps, saving time and effort and allowing quick task switching. Use scenarios Chainsaw chain sharpening: Attach to an electric grinder to restore tooth sharpness with consistent burr distribution for precise, efficient sharpening across multiple teeth. Deburring and finishing: Use for removing weld burrs and smoothing rough edges on metal components after cutting or welding tasks. Engraving and line work: Suitable for light engraving, line cutting, and general grinding applications where a controlled, versatile tool is needed.