[Wide Range of Applications] Cordless design overall compact, takes up no space and is easy to carry anywhere. perfect for professional engraver and carving beginners. [Adjustable Speed] The rotary tool has 3 adjustable speed (5000, 10000, 18000RPM) The lowest speed will let you polishing your nail in safe, the highest speed are also working on metal carving. [Portable & Easy to Operate] The precise grinding engraver is only 21.5 cm (8.46 inches) long, so you can put it in any of your bags and clothing pockets. You can switch and adjust the speed with one key, there are 3 gears in total, the speed of 1-3 gears is 5000-10000-18000 Rpm/Min, you can choose according to your needs. [Low Noise] The sound of this cordless rotary tool is very low when working, even if someone is sleeping, he or she will not feel very noisy. Great for beginners and professionals to use anytime, anywhere to make unique creations that you like [Various Grinding Bits] these metal engraving machine kit include 30pcs rotory bits,2 drill bits, 3 saw blades, 1 shank post, and 17 sanding and polishing tools,all these bits are enough to work on engraving, carving, sanding, polishing, etching, routing, grinding, drilling, cutting. Wide Range of Applications: This etching tool supports you to decorate and engrave in any material supplier, such as glass, wood, eggs, plastic, jewelry, ceramics, leather, rings, etc. You can use this tool for engraving, grinding, polishing, drilling, and cutting Colour:As Shown Material:Plastic+Metal Package Contents: 1 x USB Rechargable Engraving Pen 1 x USB charging cable 1 x Engraving tool set 3 x templates 1 x English manual Only the above package content, other products are not included. Note: Light reflection 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.