Size Shank diameter x length: 3 x 140mm. Useful length: 60mm. Small files are great for small and delicate applications. Material Alloy steel. Vinyl handles provide a firm, comfortable grip. Durable, wear-resistant, high hardness, high strength, good elasticity. Use For machining hard materials, the material after tempering treatment, metal, glass treatment , die polishing. Wood processing, deburring; chamfer trimming. Watch repair, polishing jewelry, glass processing. High quality The uniquely designed handle is easy to grip for better control while handling detail works even hard to reach areas. the easier cutting of the loss of friction of metal on metal. Ergonomic Design The handle has an ergonomic shape.It is non-slip and comfortable to keep a firm and hold for a long time even in wet and oil conditions. and ensures excellent impact resistance, precise and uniform, clear teeth. Anti-rust protection on the part and the file itself. Package contents: / p 1 set of 10 needle files. Note: it does not include other things, the color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!