NEWACALOX DIY Mini Rotary ToolUSB 5V 10W Variable Speed Wireless Electric Grinder Set, Wood Carving Pen for Milling & Engraving Description: Material: ABS Color: Gray/Green/Red Collet Chuck Diameter: 0.5-3.2mm Rated Power Input: 10W No-load Speed: 5000-15000 r/min Idling Time: 2 hours Polishing Working Time: Up to 1 hour Output Voltage: 3.7V / 10A Input Voltage: DC 5V USB Feature: Durable And Reliable: Small volume, lightweight, easy to carry, comfortable grip handle, offers better control while drilling, and is convenient to use. Regulating Speed: This electric carving tool has 3 speed adjustments with a speed range of 5000-15000 r/min. Complete Accessories: Equipped with 25pcs accessories for drilling, all ready and complete. Perfect Grinder: Perfect electric grinder for cutting, engraving, milling, grinding, polishing, removing, and drilling. The grinder engraving kit is essential for DIY carving and grinding. Suitable for jade agate, nuclear carving, wood carving, grinding aluminum plate, thin copper board, plastic board, chipboard, printed circuit board, epoxy board.Package Included: 1 × USB Electric Drill 1 × USB Wire (5V DC) 1 × Clamp Mandrel 1 × Rubber Wheel 1 × Tapping Rod 1 × Circular Saw Blade 2 × Diamond Grinding Needle 2 × Wool Polishing Wheel 3 × Sandpaper Circle 3 × Twist Drill Bits 5 × Wheel Grinding Head 6 × Electric Drill Bit Collet (0.5mm, 1.0mm, 1.5mm, 2.4mm, 3.0mm, 3.2mm) 1 × Storage Box