Feature:1. High Torsion: Our pneumatic file has high torsion, pneumatic turbine type engine structure device can improve power wear resistance using heatless and high efficiency drive.2. Mirror Polishing: Pneumatic file can do surface repair, mold roughing and mirror polishing, can quickly reduce the surface roughness of working mold, bright as a mirror.3. No Load Speed: Our reciprocating ultrasonic air file's no load speed is 35000rpm, with accurate movement, fast grinding speed and high working efficiency.4. Widely Used: Reciprocating ultrasonic air file is suitable for grinding and polishing of various metals, mirror surface processing, accurate processing of mold parts, and widely used for various abrasives.5. Oil Stone Chuck: Reciprocating pneumatic ultrasonic grinder file with oil stone chuck can clamp fiber oil stone, according to the work needs with the chuck to work on the mold.Specification:Item Type: Reciprocating Air FileMaterial: Aluminum AlloyReciprocating Stroke: Approx. 1.2mm / 0.05inNo Load Speed: 35000rpmAir Consumption: 0.15m/minAir Pressure: 90PSI.Package List:1 x Air File1 x Air Hose1 x Wrench1 x Sponge Sleeve1 x Oil Stone Chuck1 x Hanging Ring1 x Storage Box