1. Input voltage: 220V2. Output voltage: 12V3. Power: 10W4. Chuck diameter: 2.35MM5. Polishing head accessories help you polish and finish any engraving more quickly and easily6. For ultra-fine, delicate strokes, ideal for marking jewelry or other small items such as rings, pendants, etc.7. From 3,000 to 20,000 RPM (revolutions per minute) Usually glass/ceramic is fast, metal/wood is slow8. The portable electric drill is suitable for decorating or personalizing various materials, including metal, plastic, glass, jewelry, ceramics, wood, leather, etc.9. Comfortable and easy to control, hold it like holding a pen, light and compact design, let you easily and easily complete complex work10. Easily control the engraving/drawing path to make the strokes smooth and clearPackage details:- Engraving pen x 1- Marking pen x 1- A set of floral number templates x 16- 2.35MM grinding needle x 30- Connecting rod x 1- Cutting piece x 6- Sandpaper circle + nail grinding head x 12- Power Adapter x 1- Drill bit 2.5MM x 2Specification: Package Weight One Package Weight 0.43kgs / 0.94lb One Package Size 20cm * 14cm * 4cm / 7.87inch * 5.51inch * 1.57inch Qty per Carton 60 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 60 pcs = 10620 pcs 40HQ: 412 cartons * 60 pcs = 24720 pcs