Engraving pen is mainly used for engraving or Grinding on glass, metal, wood,stones, plastic,ceramics,etc,also can polish your nail or what ever items you want Adjusted Speed Engraving: Stepless speed from 3,000 to 20,000 RPM.Usually,Low speed for metal/wood,fast speed for glass/ceramic,you can choose a relevant mode required for the efficient and safe utilization of the device EASY TO USE: Turn on ON/OFF engraver pen. Slide the switch to find the speed you needed. And then just holds it like holding a pen, making you easily control the engraving/drawing path 52 Accessories and Scriber Included:The DIY tool kit includes all kinds of accessories can widely be used in Engraving,Carving, Sanding, Polishing (Nail Polishing), Drilling Colour: Black material: metal AC input: 100-240V DC output: 9V / 1000mA No continuous speed: 3,000-20,000 RPM use: This Scriber fountain pen is suitable for strokes, suitable for marking, painting and etching This jewelry tool set is suitable for wide strokes, suitable for engraving, drilling, engraving, grinding, grinding, grinding, grinding, polishing, etc. Plug Type:US Plug,it applies to Canada, India, Japan, Mexico, Thailand,taiwan the United States, the Philippines and so on. packing list: 1 * carving tool 2 packs (6 * polishing head and 6 sanding rings) (shaft diameter: 2.35mm, bore diameter: 6.35mm) 30 * Different points (10 points, 5 round bits, 4 -shaped bits, 11 flat bits) 16 * version templates (8 pattern templates, 8 letter / number templates) 1 * adapter 1 * Sculpting pen 1 * user manual Only the above package content, other products are not included. Note: Light 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.