Product name: Engraving Pen Why choose our engraving pen? 1. With 3 Variable Speed Three speeds can be changed from 5000 to 18000 RPM, you can change the speed flexibly according to the working task or working material. It is perfect for both beginners and professionals. 2. Safe Working Electric engraving pen has built-in overload protection can prevent short circuit and extend motors service life. High quality rotary tool, long service life, low noise, produce more stable and perfect results. 3