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 grinder 【Adjustable Settings】: The Engraving Pen features a clamping range of 1-3 mm, with three adjustable gear settings to cater to different needs 【USB 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 tool 【Multifunctional】: 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 projects 【Quality 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 material Voltage: 3.6 V; Gear adjustment: 3 gears Clamping range: 1-3 mm Battery capacity: 700 mAh Charging time: 2-3 H Battery 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.