Feature:1. The speed range is 3000/6000/9000/12000/15000R/min (revolutions per minute), which can easily control the engraving/drawing route.2. In general, the speed of metal and wood is lower, and the speed of glass and ceramics is faster.3. Hold it easily and comfortably, just like a pen, you can perform complex tasks without excessive pressure on your wrist or hand.4. The DIY vibration engraving pen set is suitable for metal, glass, nails, plastic, wood, leather, etc.5. This electric engraver pen is suitable in engraving, polishing, trimming, etc.Specification:Item Type: Mini Engraving PenVoltage: 3.7VSpeed Range: 3000/6000/9000/12000/15000R/minPower Supply: USB chargingBattery: 2000mAh Lithium Battery(Built-in)Scope of Application: Carving, polishing, trimming, etc.Package List:1 x Host40 x Grinding Needle16 x Engraving Template4 x High Speed Steel Saw Blade5 x Drill Bit2 x Connecting Rod6 x Matte Sheet2 x Sponge5 x Drill Clamp1 x Charging Cable1 x English User Manual