Idea for modelers jewelers electricians electronics and DIY'ers - Apply to mould processing repairing and burnishing - Used to punch and drill holes on aluminum boards thin copper boards wood boards plastic boards chipboards printed circuit boards epoxy boards - For gold and silver jewelry polishing - To cut polish and grind some precision components - Ultra low and secure voltage power - High quality magnet DC motor drive ABS shell - Package includes: - 1 * Mini drill - 5 * HSS (high speed steel) drill (diameter: 0.5 1.0 1.5 2.5 3.0mm) - 5 * Collet (inside diameter: 0.5 1.0 1.5 2.5 3.0mm) - 4 * Sanding drum - 1 * Cutting disc - 1 * Power adapter: AC 220V US type charger (110cm-cable)