17 In 1 High-Speed Air Micro Die Grinder Kits Pneumatic Tool Small Engraving Pen Pneumatic Polishing Tools

1. No-load speed: 6500rpm2. Average air consumption: 83. Air inlet size: 8 inch4. Suggested air tube inner diameter: 8mm5. Made of alloy, rotatable speed6. Using precision bearings, rotating speed up to 65000rpm7. Small size, light weight, low noise, wide range of applications8. Weight: about 740g9. Box size: about 34 x 20 x 4.5cm10. Packing list: air die grinder x 1, oiler x 1, quick coupling x 1, collet x 1, oil pot x 1, grinding head x 10, wrench x 2Uses:1. Precision grinding of various metals2. Grinding of various welding surfaces3. Plastic, stone, wood, etc., cutting, grinding, lapping4. Other complex surfaces, internal surfaces, gears, chamfers, and other uses