General description This Electric Engraving Pen is a versatile and portable tool designed for engraving on various materials including metal, wood, glass, plastic, jewelry, and stone. It features a lightweight and ergonomic design for precise control, making it suitable for both beginners and professionals. The pen operates quietly, allowing you to work without disturbing others. Technical specifications Speed range: 5000 to 18000 rpm Charging: USB Type-C Includes: 30 engraving bits, 3 saw blades, 2 drill bits, 1 polishing bit, 1 connecting rod, 1 Allen wrench, 4 stencils, and 1 USB charging cable Other information Intelligent Auto-Shutdown Protection: Automatically shuts off if resistance is too high to protect the tool and extend its service life Wide range of applications: Suitable for engraving, grinding, polishing, drilling, and cutting