[Comfortable Grip] Ergonomic handle designed for comfort and efficiency, reduces hand fatigue during extended use. [Versatile Application] Suitable for sharpening various metals including steel, copper, and aluminum, making it a must-have for metalworkers. [High Hardness Material] Made of T12 carbon tool steel for durability, ensuring long service life and effective sharpening performance. [Special Tooth Design] Features unique tooth shape for even and smooth cutting, optimizing performance across different metal materials. [Easy Maintenance] After use, simply brush off iron filings and store in a dry, ventilated area to prolong file life., Manufacturer: Badafaci