Specification:Item Type: Mini Electric Grinder SetPower: 130WSpeed: 8000-30000rpm (5 different speeds)Chuck: 0.5-3.2mm universal keyless chuckApplications: Home repair, jewelry and wood, etc.Function: For drilling, polishing, grinding, engraving and sanding in wood, metal, ceramic and plasticHow to Use:Open the package, plug it in and use it.Package List:1x Electric Grinder1x Flexible Shaft1x Drill Locator1x Protective Case1x Storage Box1x Accessory Storage Box1x Universal Chuck2 x Wrenches2 x Carbon Brushes2 x Steel Wire Brushes3 x Cutting Wheels3 x Cutting Discs3 x Mini HSS Cutting Discs4 x Drill Bits6 x Connecting Rod10 x Grindstones3 x Burr Needles (Random Style)10 x Engraving Needles (Random Style)12 x Felt Wheels18 x Sand Drums15 x Sandpaper Discs (Random Color)30 x Resin Cutting Discs (Random Color)1 x User Manual