Features Use different fixtures for grinding operations, clamp files or grinding tools. And this hand tool can be used to such as manual processing for grooves in molds or hardware products, R angle steel,etc. With high-speed bearings, grinding file keeps long service life, which is improved for more durability. Small size, this pneumatic tool supports good hand feeling with low vibration. Grinding file is with low noise advantages and high speed and torsion advantages. Feature: 1. Use different fixtures for grinding operations, clamp files or grinding tools. 2. And this hand tool can be used to such as manual processing for grooves in molds or hardware products, R angle steel,etc. 3. With high-speed bearings, grinding file keeps long service life, which is improved for more durability. 4. Small size, this pneumatic tool supports good hand feeling with low vibration. 5. 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 Pen 1 x Connection Hose 1 x Small File  1 x Wrench 1 x Connector Package List 1 x Grinding Pen 1 x Connection Hose 1 x Small File 1 x Wrench 1 x Connector