Integrating grinding, engraving, polishing, rust removal, drilling and cutting, it is suitable for over 50 materials such as metal, wood, glass, plastic and stone, meeting the needs of engraving. 90-minute battery life /USB-C fast charging, 3-speed adjust, precisely suitable for engraving on various materials such as jewelry and leather, meeting the small and precise engraving needs of users from beginners to professionals. This custom engraving pen features ergonomic design and low-noise operation. It includes 30 drill bits and 1 tungsten steel engraving head, with an ABS+ metal body, making it easy to meet various engraving needs. The LCD screen displays the gear level and battery power. The intelligent chip has an automatic power-off protection function in case of overheating or overload, making it safe, and more worry-free. This mini grinding and engraving tool is a thoughtful and inspiring present for Christmas, birthdays, or any special occasion, suitable for creators of all ages. Color: As Shown Material: Metal Package Contents: 1 set * engraving pen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.