Features High Efficiency Performance: Enjoy unmatched flexibility with the Cordl Rotary Tool, featuring adjustable speeds from 0 to 20,000 RPM for precise control during your projects Versatile Multi-Functionality: This powerful rotary tool replaces an entire toolbox, perfect for engraving, grinding, polishing, and more, catering to all your crafting needs Complete Set of Grinder Bits: The package includes 7 different grinding bits, ensuring you have the right tool for every task and enabling seamless transitions between projects Convenient Quick Charging: With a built-in 3.6V 500mAh lithium battery, the etching pen supports USB charging and provides up to 180 minutes of continuous use for uninterrupted creativity Lightweight and Portable Design: The compact and lightweight engraver pen is easy to carry, making it ideal for outdoor projects and on-the-go crafting adventures Features: 1、High in Efficiency: Cordl design enables more flexibility in the , while the speed can be ly adjust from 0 to 20000RPM. 2、Better Application: One rotary tool is more powerful than a tool box since it can be widely used on engraving, grinding, polishing, etc. 3、Has 7 Grinder Bits: There are 7pcs different grinding bit in the set, which will surely satisfy your various working needs, very practical. 4、Quick USB Charging: Equipped with a 3.6V 500mAh 18350 lithium battery, the etching pen supports USB charging, and can work for 180 minutes. 5、Simple Carrying: Compact in size and light in weight as well, the engraver pen can be conveniently carried for outdoor working. Specification: Item Type: Cordl Rotary Tool Product Model: I2C Speed: 0-20000RPM Reversible: Yes Grinding Bit Connecting Rod Diameter: Approx. 2.35mm / 0.09in Battery: 1 x built in 3.6V 500mAh 18350 lithium battery. Charging Interface: TYPE C Package List: 1 x Cordless Rotary Tool 7 x Grinding Bit Package List 1 x Cordless Rotary Tool 7 x Grinding Bit