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◀ USB Rechargeable Engraving Machines ▶ 📦 VIEW ON AMAZON: --------------------------------------------------------------------------------------------------------------------------- This electric engraving pen can adjust the speed from 5000 to 25000 r/min, The highest speed is also working on the metal surface. Low noise design allows the engraver pen to keep quiet while working at high speed. When the etching tool encounters great resistance, it will shut off automatically to protect itself to extend using life. Then you just need to press the ON/OFF button to start working again. These electric jewelry drills are powered by a USB interface and can meet your outdoor use after finishing charging. It can also be used while charging, but we suggest you use it after charging to extend battery use life. This engraver is suitable for both hobbyist and professional use and allows you to create unique markings on wood, steel, metal, glass, cera
