Surface: The engraving pen adopts Japanese motor, which can reach 23,000 RPM, allowing you to engrave on the surface of metal, wood, glass, stone, ceramics and hard material object. DIY Engraving Tool: With durable diamond tip, high strength and wear resistance,the engraving pen can be used for painting, polishing, engraving, trimming, marking, grinding. A excellent DIY tool or gift for engraving enthusiasts, artists, beginners, etc. Battery Operated: Powered by 2 * AAA batteries, it will start working when you press the red button, very easy to use.(The batteries are not included.) Ergonomic Design: Just hold it like holding a pen, comfortable hand feel, easy and effortless to complete your artistic works. Portable Lightweight: Small size, easy to put in your pocket or bag. How to Use: 1.Turn on the top cap and put in 2 * AAA batteries. 2.Press the red button on the engraving pen, and then it can start to work. Specifications: Color: Black/Blue/Red/Gold/Silver(optional) Main Material: Stainless Steel #43; Diamond Tips Battery Operated: Powered by 2 * AAA Batteries(Not included) Application: Metal/Wood/Glass/Stone/Ceramics/Hard Material Surface Item Size: 16.0 * 1.8 * 1.8cm / 6.3 * 0.7 * 0.7in Item Weight: 32g / 1.1oz Package Size: 20.5 * 8.0 * 1.5cm / 8.1 * 3.1 * 0.6in Package Weight: 53g / 1.9oz Notes: The head changing tool is delivered in random color. Please allow 1-3mm error due to manual measurement. Do not touch the diamond tip when the engraving pen is working. It is not recommended that you engrave electronic media such as CD's or DVD's etc, because engraving on these materials may damage the media. Package List: 1 * Engraving Pen 1 * Extra Diamond Tip 1 * Special Head Changing Tool(Random Color)