Description: Compact and Convenient: This Mini Cordless Rotary Tool is designed with a small and handy body for easy use. It's great for home use as a electric drill or small electric grinderAdjustable Settings: The Engraving Pen features a clamping range of 1-3 mm, with three adjustable gear settings to cater to different needsUSB Rechargeable and Replaceable: The rotary tool is USB rechargeable for repeated use, making it environmentally friendly and cost effective. Additionally, the grinding head can be replaced as needed, extending the lifespan of the toolMultifunctional: This Cordless Rotary Tool Kit is not only suitable for grinding but also ideal for rust removal, polishing, engraving, drilling, cutting etc., making it an ideal solution for your DIY projectsQuality Material & Size: Made from reliable ABS material with Engraving Pen size of 16cm/6.30inch, this Electric DIY Mini Grinder ensures long term performance while being lightweight and easy to handle Specification: Material: ABS materialVoltage: 3.6 V;Gear adjustment: 3 gearsClamping range: 1-3 mmBattery capacity: 700 mAhCharging time: 2-3 HBattery life: about 60 min Size Chart: Engraving Pen 16cm/6.30inch Package Includes: 1 Host, 1 Grinding Head, 1 USB Cable Note: Please allow slightly errors 1-2cm differences due to manual measurement.