Features 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 File Material: Aluminum Alloy Reciprocating Stroke: Approx. 1.2mm / 0.05in No Load Speed: 35000rpm Air Consumption: 0.15m³/min Air Pressure: 90PSI Package List 1 x Air File 1 x Air Hose 1 x Wrench 1 x Sponge Sleeve 1 x Oil Stone Chuck 1 x Hanging Ring 1 x Storage Box