Size: The size of the rotary file is about 4: 40 x 10 x 38 x 93 mm (head diameter x handle diameter x file length x total length). Wide range of uses: Rotary spherical grinding head, widely used in metal products, tool manufacturing, engineering, model making, wood carving, jewelry making, welding, chamfering, casting, deburring, grinding, cylinder head insertion and sculpture. Tooth surface: The teeth provide you with excellent service life and have more durable burrs. Comfortable and effortless use allows you to easily and quickly remove a variety of materials. The thick coating allows for rapid stock removal while leaving a relatively smooth finish. Function: A very rough coating can quickly remove voids while maintaining a relatively smooth finish. Saves time and energy. Design: The rotary file head is spherical, the file teeth are medium teeth, and the size is moderate. Size: 40 mm 1. Design: The rotary file head is spherical, the file teeth are medium teeth, and the size is moderate. 2. Material: Made of heat-treated carbon steel, the service life is 10 times that of high-speed steel. 3. Wide range of uses: Widely used in metal products, tool manufacturing, engineering, model making, wood carving, jewelry making, welding, chamfering, casting, deburring, grinding, cylinder head insertion, and carving. 4. Function: A very rough coating can quickly remove the void while maintaining a relatively smooth finish. Saves time and energy. 5. Size: The size of the rotary file is about 4: 40 x 10 x 38 x 93 mm (head diameter x handle diameter x file length x total length). Specifications: Product Name: Rotary File. Color: Black. Material: Carbon Steel. Tooth Thickness: Medium Tooth. Dimensions: about 40 x 10 x 38 x 93 mm (head diameter x handle diameter x file length x total length). Package Content: 1 x Rotary File.