Electric Drilling Etching Pen Profeional Cordle Engraving Drill 3 Gears Adjustable DIY Power Tools for Ceramic Metal PlasticFeature:1.Comfortable Grip:The well-designed engraving pen lets you use it like a pencil for a comfortable hand, better control and precise engraving.2.Reliable Quality:High-strength metal and selected electronic parts are used, which are wear-resistant, wear-resistant and have a long service life.3.Easy to use:The cordle engraving pen can work normally without a plug, eliminating the problem of wire confusion.4.High Efficiency:This engraving pen can provide high speed of up to 5000-25000r/min, providing efficient engraving effect, three-speed adjustable, easier engraving. The electric engraving pen is powered by lithium battery and can be recharged. No more disposable batteries!5.Wide Range of Applications:It can be used to engrave metal, ceramics, wood, pebbles, plastics, etc. Perfect for DIY projects or craft use.Specification:Name: Mini electric grinding penVoltage: 3.6VBattery capacity: 280 mANo load speed: 5000-25000Chuck size: About 2.35mm/0.09inchHost length: About 12.4cm/4.88inchStyle:A: 30pcs Grinding NeedlesB: 42pcs Silver a SetC: 46pcs Silver a SetThe full charge lasts about 90 minutesAfter fully charged, the maximum speed, no-load, continuous operation about 110 minutes.Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement. Style A:30pcs x Grinding needlesStyle B:42pcs x Silver a setStyle C:46pcs x Silver a set