PlusRoc 0.3mm - 4mm Variable Speed Control Mini Electric Hand Drill: Packing list A: StandardB: Standard +4pcs drillC: Standard +105pcsD: Standard +105pcs+30 magic needle Specifications of the drill: 1.No Load Speed: 1,000 r/min @3V;4,500 r/min @6V;1,000 r/min @12V2.Rated Power: 6-24W3.Working Voltage: DC 3V-12V4.Rated Current: 2A5.Chuck Clamping range:0.3-4mm6.Power Interface: 5.5mm x 2.1mm Specifications of the power adapter: 1.Input Voltage: 100-240V2.Output Current: 2A3.Cable Length: AC Cable 120cm/47.2 inch, DC Cable 93cm/36.6 inch4.Power Interface: 5.5mm x 2.1mm5.DC Power Plug6.Material: Metal Features: 1.Mini size drill body with anti-skid surface is meant for a good grip in hand.2.Variable speed control adapter allows you to adjust the speed as desired from 1,000rpm to 11,000rpm.3.Widely used for arts and crafts, circuit board, resin, models, beads, pearls, wood, plastic, sheet metal, acrylic, aluminum, etc4. Durable and Reliable - Small size, light weight, easy to carry, comfortable handle, provide better control while drilling, easy to use.5. Speed regulation - this electric engraving tool has 5 speed regulation, the speed regulation range6. Complete Acceories - Equipped with 139 drilling acceories and you are all set.7. Can be used in various environments.8. -Ideal electric grinder for cutting, engraving, milling, grinding, polishing, removing and drilling. Grinder engraving kits are eential for engraving and sanding.9. Suitable for jade agate, nuclear carving, wood carving, grinding aluminum plate, thin copper plate, plastic plate, particle board, circuit board, epoxy board. WARNINGS: Wear protective equipment before using the drill.Avoid hand-touch on the chuck and around area while the drill is running.