Our engraving pen installation, no required , just insert bit to use and plug out after use3 levels adjustable rotation speed allows beginners to learn to carve gradually and use it safelyEngraving pen design, lightweight and compact. Ergonomic grip provides extra comfort and constant control.3 gears adjustable speed 5000-18000 rpm, suitable for different occasionsWith , and overload indicator lights, making it more convenient for you to useOverload protection automatically cuts off on high (hard pressure) makes use safely. The lowest speed allows you to polish your nails safely, and the highest speed can also be used for metal,glass,ceramic engraving.This metal engraver pen equips with an excellent motor and a Lithium battery and is rechargeable by a USB interfaceCordless use lasts up to 30 minutes idle after fully charged, which can meet most of the requirements of your DIY projects at anytime and anywhere.This hand engraving kit can be used as an electric engraving machine or a small rotating , allowing you to sculpt personalize or decorate almost any surface in seconds, like metal, plastic, glass, ceramic, wood, leather, diamond, stone and many more.Portable and compact designed engraving pen with USB charging is a good gift for everyone. You can also design gifts for the people you love thanks to its special templated stencils such as Christmas,Halloween ,Birthday, Easter and Ramadan. You can give gifts by processing Wood Metal Glass Plastic Leather products.Color: silvermaterial: metalPackage Contents:1 set engraving pen kitOnly 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.