Must read before buying: There are 6 packages in the link, among which the package Set 5 has only acceories and no machine, please check the package picture and choose the package you need to buy. As thin as a pen Rechargeable engraving pen Is a Quiet tool Interpret the definition of household Multifcuntion You are also a master engraver Compact and portable, powerful. It adopts customized ultra-high speed Nd-Fe-B motor and customized 32000 speed. Without affecting the effect, it has a longer service life compared with similar machines Wirele lithium battery 10440 rechargeable lithium batteries(equipped with chargers) are used. Although the product is small, it has sufficient power. High concentricity The clamping range is 2.35mm. Suitable for grinding acceories of 2.35mm. Tail switch, exquisite design. Made of high-quality stainle steel, it not only has a delicate and beautifulappearance, but also has a pen like writing experience. Real comfort As comfortable as holding a pen, you won'tbe tired after working for a long time. Product Name: Mini Engraver PenBattery model 10400 rechargeable lithium batteryBattery voltage 3.7VNo load time 110 minutesLoad for 60 minutesProduct size: length 132mm width 12mmClamping handle diameter: 2.35mmProduct weight: 64gProduct speed 35000 rpm/minScope of application: It is suitable for engraving, carving, micro-carving, stainle steel marking on all kinds of stone, wood, olive pit, plastic, egg carving, gla, ceramics, and other planes. Grinding and cutting can only be aisted.Note: Do not pre the machine forcibly, use the machine speed to operate. Must read before buying: There are 6 packages in the link, among which the package Set 5 has only acceories and no machine, please check the package picture and choose the package you need to buy.