Features Convenient and Practical: Use different fixtures for grinding operations, grinding file is clamp files or grinding tools,it is convenient and practical. Function: And this hand tool can be used to such as manual processing for grooves in molds or hardware products, R angle steel,etc. Exquisite Workmanship: With high-speed bearings, grinding file keeps long service life, the grinding file is improved for more durability. Low Vibration: Small size, this pneumatic tool supports good hand feeling with low vibration. Low Noise: Grinding file is with low noise advantages and high speed and torsion advantages. Specification: Item Type: Grinding file Model: TLL-07 Maximum Speed: 22000RPM Maximum Air pressure: 0.6Mpa Air Inlet: Approx. (1/4 inch) /6.4mm Chuck Size: Approx. (1/8 inch ) / 3mm Package List: 1 x Grinding Pen1 x Connection Hose1 x Small File 1 x Wrench1 x Connector Package List 1 x Grinding Pen 1 x Connection Hose 1 x Small File 1 x Wrench 1 x Connector