Needle Files: File Type: Round; Shank Diameter: 3mm / 0.12"; Total Length: 140mm / 5.51" (approx.); Diamond-plated Length: 50mm / 1.97". Electroplated diamond has fine grains, high hardness and good wear resistance. The file teeth are clear, sharp and durable.||Wide Applications: Suitable for shaping and polishing metal, wood, marble, stone, plastic. Works on small and delicate projects. Especially perfect for finely grinding models and instrument parts, and dies.||Features: PVC plastic dipped handle provides firm and comfortable grip in use when exposed to fluid or moisture. Designed with the base substrate without any additional coatings, suitable for wide ranges of applications.||Easy to Use: When using the file, it should not be too fast. The file usage frequency is 40 times per minute. For long-lasting use, please use a lubricant (such as water) when using diamond needle files.||Tips: Do not use a needle file to polish the oxide layer of the workpiece. When filing, it should be ground in the same direction, not rubbing back and forth.
