1. Compressed air is power saving, environmental protection, safe and efficient, long service life 2. 0.7mm stroke repeated filing, suitable for various fine jade carving processes 3. Uses air tube, operate with low noise 4. Straight handle is comfortable to hold and easy to use 5. With a extremely flexible tube with an abrasion guard that allows you to reach the most difficult areas.<br><br>Item Type: Air Grinder File Stroke: 0.7mm Reciprocating Speed: 28000rpm Air Pressure: 6bar Inlet Outer Diameter: . 6mm/0.2in Color:As Shown Material:Plastic+Metal<br><br>Package Contents: 1 * Pneumatic sharpening file 1 * Chuck 1 * Wrench 1 * Pipe 1 * <br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.