Needle File Set: Shank Diameter: 3mm / 0.12"; Total Length: 140mm / 5.5" (approx.); Diamond-plated Length: 50mm / 2.0". Files Types: Round, Square, Cutter, Double Half Round, Flat, Flat Triangle, Half Round, Oval, Flat Pointed, Triangle. 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: Electroplated diamond has fine grains, high hardness and good wear resistance. PVC plastic dipped handle provides firm and comfortable grip in use when exposed to fluid or moisture. Titanium plating can offer capability, wear resistance, rust prevention, and long service life.. 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. The file teeth are clear, sharp and durable..
