Description:Material: ABSColor: Gray/Green/RedCollet Chuck Diameter: 0.5-3.2mmRated Power Input: 20WNo-load Speed: 5000-15000 r/minIdling Time: 2 hoursPolishing Working Time: Up to 1 hoursOutput Voltage: 3.7V / 10AInput Voltage: DC 3.7V USBPackage Weight: Approx. 190gFeature:1.Durable And Reliable -Small volume, light weight, easily carry, comfort grip handle, offers better control while drilling., convenient to use.2.Regulating Speed-This electric carving tool has 3 speed adjustment,speed adjustment range:5000-15000 r/min.3.Complete Accessories-Equipped with 25pcs accessories for drilling,all ready and complete.4.Perfect Grinder - Perfect electric grinder for cutting, engraving, milling, grinding, polishing, removing and drilling. The grinder engraving kit is necessary for DIY carving and grinding.5.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 pcs USB Electric Drill1 pcs USB Wire(5V DC)1 pcs Clamp Mandrel1 pcs Rubber Wheel1 pcs Tapping Rod1 pcs Circular Saw Blade 2 pcs Diamond Grinding Needle2 pcs Wool Polishing Wheel3 pcs Sandpaper Circle3 pcs Twist Drill Bits5 pcs Wheel Grinding Head6 pcs Electric Drill Bit Collet(0.5mm, 1.0mm, 1.5mm, 2.4mm, 3.0mm, 3.2mm)1 pcs Storage Box