Description: 【Material】: Micro die grinder is made of metal material, which is strong and wear resistant and can be used for a long time 【Efficiency】: Air powered micro die grinder can rotate at high speed, with a no load speed of about 58,000 rpm, which improves your work efficiency and is professional and practical 【Design】: Micro air grinder kit is small and portable, easy to store and operate, saving your time and energy 【Easy to Use】: Micro die grinder is simple and convenient to use, and the handle feels comfortable to hold, which allows better control, ensuring efficient work 【Wide Application】: This air powered micro die grinder is widely used and can be used for polishing, cleaning, etc. Whether you are processing metal, wood or glass, it can meet your needs Specification: Material: Metal Speed: 58000 rpm Working pressure: 6.3 kg Air inlet size: 1/4 inch Size Chart: Chuck: 2.38 mm/0.09 inch, 3 mm/0.12 inch Package Includes: 1x Micro Air Grinder Kit Note: Please allow slightly errors 1-2cm differences due to manual measurement.