ITEM NAME:1 set Electric Engraving Engraver Pen Carve DIY Tool For Metal Plastic Wood Hot Descriptio n Description: 1. Function: grinding and polishing, auxiliary cutting, and drilling 2. Materials able to be polished and polished: woods, plastics, pipal tree seeds, diamonds, walnuts and so on 3. Brass drill chuck, drill or grinding head whose shank diameter is 2.5-3.2 can be adjusted to match the hexagon socket head cap screw. 4. It can be connected to the charger for indoor use. 5. It can be directly connected to the mobile power bank for outdoor use, easy to carry. Specifications: 1. Material: aluminum alloy 2. Voltage: 5 V 3. Supply Current: more than 2A 4. Size: about 90 * 25 mm / 3.54 * 0.98 inch 5. Drill Maximum Diameter: about 3.2 mm / 0.13 inch Package Included: 1 * small electric engraver 1 * USB charging cable 1 * grinding wheel head 1 * rod 3 * abrasive cloth sleeve Note: The color of the item displayed on the monitor may be slightly different on your computer monitor, because the monitor is not calibrated Whatever the ending's perfect or not, you can't disappear from my world 1 set Electric Engraving Engraver Pen Carve DIY Tool For Metal Plastic Wood Hot.1 small electric engraver. Materials able to be polished and polished: woods, plastics, pipal tree seeds, diamonds, walnuts and so on. We'd like to settle any problem in a friendly manner. Material: aluminum alloy.