Performance: Durable, wear-resistant, high hardness, high strength, good elasticity. Size: Metal parts shank diameter * length: 3mm * 140mm / 0.12" * 5.51". Application: Suitable for machining hard materials, post-quenching material processing, metal, glass, die polishing, wood processing, deburring, chamfer trimming, watch repair, and jewelry polishing. Product Name: File Set Color: Black Material: Steel Package Includes: File Set * 1 Note: 1. Due to extended shipping times, items may be damaged during transit. If damage occurs, please through the official platform before leaving feedback, and we will assist with resolution. 2. Manual measurement may result in a size variation of 1–3 cm. 3. Actual color may vary slightly due to monitor display differences.