This multi-purpose electric grinder tool kit features with practicality, high efficiency, high quality material and long service time, has different accessories. It can be used for carving, polishing, cutting and polishing of multiple materials, such as wood, plastic, metal, jade, etc.    Features:   Premium Motor--Equipped with copper wire motor which features high temperature resistance and high power, it delivers high speed from 5000 to 18000rpm, for efficient work.  High Precision Chuck--Well-designed three-jaw-chuck with high concentricity, clamps the drill bit/saw blade/grinding burr tightly, enables quick accessory installation or replacement with ease.  Safe to Use--It adopts intelligent control circuit board, allows for over-current/over-voltage/over-temperature/charging and discharging protection, gives safe and trouble-free operation.  Variable Speed Control--Just a simple press on the button can achieve 5-level speed adjustment, to create different effects for different applications. Also a indicator light on the grinder shows speed status clearly.  Rechargeable Electric Grinder--With 2000mAh lithium battery inside, it is capable of being recharged and used again. Once 30min charging offers 60min long working time.  Reliable Quality--Made of ABS shell, selected electronic parts, it ensures sturdiness, excellent & stable performance and durability for use.  Light Weight & Compact Size--Mini grinder, only 4.76oz, comes in 17.8*2.8*2.8cm portable size for easy carry and storage, provides comfortable grip for better control.  Wide Application--Multi-functional electric grinder can be used for cutting, polishing, grinding, drilling, engraving, rust removing, cleanup, etc. One tool meets different demands.  Multiple Accessories--Accessories include 5 drill bits(0.8-3.0mm), 5 grinding wheel shanks, 2 saw blades, 2 whetstones, 1 brush, 108 sanding pieces, 10 sanding sleeves(5pcs L & 5pcs S), 10 felt wheels(5pcs L & 5pcs S), 2 cutting blades, 4 connecting rods, 1 grinding paste, 36 resin cutting discs.    Specifications:   Material: ABS + Electronic Components  Color: Black, Green (Optional)  Plug: US Plug  Type: Type1 (black&speed adjustable), Type2 (black&speed unadjustable), Type3 (green&speed adjustable), Type4 (green&speed unadjustable) (Optional)  5-Speed Adjustment: YES   Chuck Range: 0.5-3.2mm  Voltage: 4.2V  Speed: 5000-18000rpm  Battery: 2000mAh Lithium Battery  Charging Time: 30min  Working Time: 60min  Item Weight:   Type1: 135g / 4.76oz  Type2: 90g / 3.17oz  Type3: 135g / 4.76oz  Type4: 90g / 3.17oz  Item Size: 17.8*2.8*2.8cm / 7.00*1.10*1.10in  Package Weight:   Type1: 366g / 12.91oz  Type2: 346g / 12.20oz  Type3: 385g / 13.58oz  Type4: 375g / 13.22oz  Package Size: 20*8.5*6cm / 7.87*3.34*2.36in    Note:  Due to manual measurement, there may be deviation.  Due to lighting, the picture and material object may slightly differ in color, please in kind prevail.     Packing List:   1 * Rotary Tool  1 * Power Adapter  5 * Drill Bit (0.8-3.