Parts List:1×Electric Grinder1×USB Charge Wire3×Sandpaper Circles5×Collet (0.8mm,1mm,1.6mm,2.3mm.3.2mm)2×Wool Polishing Wheels5×Grinding Wheel Head2×Diamond Grinding Needles1×Tapping Rod1×Connecting Rod1×Rubber Wheel1×Circular Saw Blade3×Twist Drill Bits1×Instruction Manual1×Plastic BoxProduct Name: Mini Cordless Rotary ToolType: With Lights, Fixed Gear Speed RegulationMaterial: Plastic + MetalColor (Optional): Gray, Reddish Orange, Green, Red Size: 180×35mmRated Voltage: 3.7VBuilt-In Energy: Lithium BatteryBattery Capacity: 2000mahCharging Time: Varies by charger, generally 2 - 4 hours to completeBattery Charging Voltage: 5VWorking Time: 1-2 hours of continuous idlingNo-Load Speed: 3/6/9/12/15 × 1000rpmClamping Range: 0.5/1.0/1.5/2.4/3.0/3.17mm Charging Interface: USBFunction: Engraving, cutting, polishing, grinding of multiple materialsApplication Range: Ceramics, plastics, wood, walnuts, beeswax, bodhi seeds, root carvings, iron blocks, etc.