USB Electric Drill Mini Electric Grinding Variable Speed Rotary Tool Drill Bit Engraving Pen DIY Milling Polishing Tool Features: Comes with 23 acceories for different engraving and grinding needsPractical: This kit allows you to engrave in seconds to personalize or decorate almost any surface - metal, plastic, gla, ceramic, wood, leather, diamond, stone and more. It's perfect for DIY creations, crafting.Knob control on/off and steple speed regulation: from 3,000 to 25,000 RPM (revolutions per minute)Lightweight and compact pen-like design: The surface of the body is designed from fine lines to deep grooves to provide a comfortable experience. Ergonomic grip for added comfort and stable control.Wide range of uses: suitable for carving (nuclear carving/egg carving/bone carving/jade carving), cutting, polishing, engraving, milling, grinding, trimming, removing and drilling, grinding. Parameters: Clamping range: 0.5-3.2Speed range: 3000-18000r/min can be falsely marked 3000-25000r/minInput voltage: 100-240VOutput voltage: 12VPower: 13WBody size: 160x27mm Description: Mini model (steple speed regulation) is easy to operate, small in size, user-friendly design, comfortable, wear-resistant, non-slip, small in power, suitable for micro-engraving operationsScope of application: small carving (nuclear carving/egg carving/bone carving/jade carving) auxiliary small grinding/polishing cutting/drilling/trimming/cleaning, etc. Product list: 26* acceorie Attention This product needs to be connected to a power source for use. If you mind, please do not take photos. Thank you.