Features Upgrade Technology: The key components of this pneumatic air grinder pen set are made of tungsten steel alloy gears, with superb wear and long lifespan. High Efficiency: The bearings of the pneumatic air grinder pen can withstand super high speeds of 60000RPM, enhancing grinding speed and efficiency. Versatile Applications: This pneumatic air grinder pen set can be used for accuracy grinding of various metals, as well as cutting plastics, stones, wood, and more. You can also use the mini grinder for grinding, polishing, cleaning accessories, rotors, backing plates, brake pads, cylinder heads, bases, and other applications. Robust and : The pneumatic air grinder pen set is built to last, with robust materials and robust construction. It offers stable and smoothly performance, ensuring consistent results with every use. Ideal for professional craftsmen and enthusiasts alike. Lightweight and Portable: This pneumatic air grinder pen set is compact, lightweight, and designed in a pen shape. It can be easily operated with one hand, making it ideal for use in narrow areas. Easy to use, easy to assemble and disassemble, and convenient to carry around. Spec: Item Type: Air Die Grinder Kit Material: Alloy Steel, Tungsten Steel Alloy No Load Speed: 60000rpm Collet Capacity: M2.M3, [Standard M3] Air Inlet: 1/4in Application: Suitable for high accuracy grinding, polishing, polishing, deburring, chamfering and other operations in industries such as plastic products, shoe materials, and die casting. How to Use: Install and use PackageList: 1 x Pneumatic Air Grinder Pen 2 x Wrenches Package List 1 x Pneumatic Air Grinder Pen 2 x Wrenches