HARDELL Electric Engraving Pen, HARDELL Engraver Tool 37000RPM, USB Cordless Engraving Machine for Artists&DIYers, Portable DIY Rotary Engraver for Jewelry Wood Glass Stone CarvingHIGH SPEED PERFORMANCEExperience precision and efficiency with a 37,000 RPM motor, perfect for intricate metal engraving and creative projects, and it is not easy to heat up for a long time. Pen type push switch, pen press, sensitive contact switch, easy to operate. ERGONOMIC&LIGHTWEIGHT DESIGNEngineered for comfort, this compact tool reduces hand fatigue, allowing for extended use without strain. Engraving pen is like a writing pen, with a