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 30,000 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: Thisair 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: MetalSpeed: 30000 rpmWorking pressure: 90 PSIAir inlet size: 1/4 inch Size Chart: Chuck: 3 mm/0.12 inch6mm/0.24inch Package Includes: 1x Micro Air Grinder Kit Note: Please allow slightly errors 1-2cm differences due to manual measurement.