USB Rechargeable Engraving Machines With 35bits,Mini Electric Engraver Etching

USB WIRELESS ENGRAVER:These engraving tool equiped with Lithium battery and rechargable by USB interface. Cordless using will be up to 30 minutes idling after full charge. Easy to help you finish better engraved craft.
VISIBLE SPEED ADJUST:Metal engraver pen equips with qualify motor. 3 position adjust rotation speed from 5000-25000 r/min to apply different situations. The lowest speed will let you polishing your nail in safe, the highest speed are also working on metal carving.
: these metal engraving machine kit include 30pcs rotory bits,2 drill bits, 3 saw blades, all these bits are enough to work on engrav