Engraving Pen Built-in Hollow Cup Motor for Jewelry, Wood, Glass, and Carving

🔥 High-Speed Performance for Smooth, Accurate Engraving Experience effortless engraving with 5 rotational speed levels ranging from 22,000 RPM to 30,000 RPM. Whether you need delicate detailing or high-intensity carving, this precision engraving tool adapts to every material—wood, metal, glass, stone, ceramics, and more.   Level 1: 22,000 RPMLevel 2: 24,000 RPMLevel 3: 26,000 RPMLevel 4: 28,000 RPMLevel 5: 30,000 RPM   Perfect for both beginners and professionals looking for a powerful engraving pen with consistent, high-speed output.   ✨ Smart Design for Easy, Comfortable Use Our engraving pen features a clear, intuitive layout to make your workflow smoother. Every detail is designed for precision, comfort, and efficiency:   1. Power Button: Short press to switch modes; double-click to start/stop.2. OLED Display Screen: Shows rotational speed and battery level at a glance.3. Concave Rubber Grip: Ensures comfort, stability, and anti-slip control during long crafting sessions.4. Magneti