The electric grinding pen with comfortable grip, well-designed, allows you to use it like a pencil to get a comfortable feel, better control and precise engraving. Electric portable grinding pen is suitable for decorating or personalize a wide variety of materials including jade, wood and more. Features -Color:Light Green -Material:ABS, steel, rubber, copper -Size:12.70X2.70X2.70cm/4.99X1.06X1.06in -Type: 3-speed speeds regulation -No-load speeds: 5000-10000-15000 -Lithium battery capacity: 700MA -Power supply: USB charging -Three-gear selection, suitable for different occasions, making your project easier and more professional. -Wide application. Great for marking or etching on jewelry, or other tiny objects, like rings, pendants, etc. -There are different kinds of grinding heads, which can meet your different kinds of polishing use. -The cope of application is wide, suitable for nuclear , egg , jade and other polishing, grinding, etc. -Small volume, light weight, easily carry, comfort grip handle, offers better control when drilling, convenient to use. Package list: 1 x electric 1 x engraving pen 6 x cutting 2 x connecting rods 16 x templates 30 x grinding heads 1 x charging cable 1 adapter 2