A professional workman should first own a set of hand electric Drill tools. This Mini Drill PolishingSet is exactly no other than your best choice. It contains widely used tools for your various needs. Buying this polishing drill set is much more economical than buying different tools separately. Made of professional-grade material， these polishing drills are wear-resistant， sharp and durable. With heat-resistant character， it can maintain the hardness and toughness even at high temperature as well as withstand the trial of long time. Choose this useful set of tools， and you will get more than you pay for!                                    Features            Idea for modelers， jewelers， electricians， electronics and DIY’ersApply to mould processing， repairing and burnishingUsed to punch and drill holes on aluminum boards， thin copper boards， wood boards， plastic boards， chipboards， printed circuit boards， epoxy boardsFor gold and silver jewelry polishingTo cut， polish and grind some precision componentsUltra low and secure voltage powerHigh quality magnet DC motor drive， ABS shell                                                            Specifications             Lenght     6.3" / 16cm    <br> Frenquency     50/60Hz    <br> Output     12V DC 1A    <br> Input     100-240V 0.3A    <br> Color     Silver    <br> Model     JZK138Q    <br> Weight     14.46oz / 410g     <br>                                                             Package Includes            1 x Mini Hand Electric Drill<br>5x HSS (high speed steel) drill (diameter: 0.5， 1.0， 1.5， 2.5， 3.0mm)<br>5 x Collet (inside diameter: 0.5， 1.0， 1.5， 2.5， 3.0mm)<br>4 x Sanding Drum<br>2x Cutting Disc<br>1 x Cloth Wheel<br>1 x Brass Brush<br>1 x Graver<br>2x Spare Engraving Blade<br>1x Power Adaptor<br>1x Tool Pouch with Strap<br>