28Pcs Grinder Set Mini Grinder Machine Rotary Tools Kit Engraver Pen Carving

Features: *Durable and reliable-small size light weight easy to carry comfortable grip better control when drilling easy to use. *Speed adjustment-This electric engraving tool has 3 speed adjustments the speed adjustment range: 5000-15000 rpm. *Complete accessories-equipped with 25 drilling accessories everything is ready. *The perfect grinder-the perfect electric grinder suitable for cutting engraving milling grinding polishing removing and drilling. The grinder engraving kit is needed for DIY engraving and grinding. *Suitable for jade agate nuclear carving wood carving grinding aluminum plate thin copper plate plastic board particle board printed circuit board epoxy board etc. Specifications: Product name: Grinder Set Material: ABS Optional Color: Green Red Grey Size: As picture show Collet Chuck Diameter: 0.5-3.2mm Rated Power Input: 10W No-Load Speed: 5000-15000 rpm Idling Time: 2 hours Polishing Working Time: Up to 1 hours Output Voltage: 3.7V / 10A Input Voltage: DC 5V USB Suitable for: Cutting Engraving Milling Grinding Polishing Removing and Drilling Quantity: 28 Pcs Set Package Included: 1 × 28Pcs Grinder Set Note: 1.Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data.