【Package Contents】This mini metal file set contains 20 diamond needle files of various shapes, including 10 regular shapes such as square, semicircle, triangle, lancet, and oval, and 10 special shapes to meet your various polishing needs. The special shapes are designed for difficult or unusual objects. 【Size Information】The size of this set of small fine model mini files is 144 mm in total length and 3 mm in shank diameter. It is suitable for processing ceramics, alloys, and glass. 【High-quality Materials】These needle files are made of high-quality diamond. They are well-made and corrosion-resistant. They have fine grain, high hardness, strong torque, and good toughness. 【Comfortable and Secure Grip】These metal needle files feature non-slip ABS rubber handles that provide a secure and comfortable grip even in wet conditions and are ergonomically designed. 【Versatility】These metal file sets offer an exceptional variety of shapes and types to meet all your shaping needs, whether for metal, wood, jewelry, or model making.