Feature:1. From 7000 to 14000RPM, the one button speed switching will satisfy all your working needs.2. Allows for application in a variety of materials, including stone, glass, ceramic, even pet paw.3. Can be used for engraving, sharpening, grinding, polishing, sanding, and so on, very practical.4. Including sanding sleeves and grinding heads in varied sizes, ensuring high working efficiency.5. Light weight and small size make the operation much easier, the carrying is very simple as well.Specification:Item Type: Mini Electric GrinderSpeed: 7000-14000 RPMPower: 5WDC Voltage: 18V 1000mAClamping Size: Approx. 3.2mm / 0.1in (change the chuck by yourself)AC Voltage: 100-240V 50/60Hz.Package List:1 x Mini Electric Grinder1 x Mini Electric Grinder Adapter20 x Sanding Sleeve1 x Sanding Sleeve Reel2 x Wool Wheel1 x Wool Wheel Rod1 x Saw Blade1 x Saw Blade Rod5 x Collet2 x Grinding Needle(Random Style)5 x Flint Grinding Head3 x Drill Bit1 x Accessory Storage Box1 x User Manual