Specification:Aluminum materialelectric drill and power supplyblack and sliversize:89mm(L) 23mm(Dia)Power supply:input:100-240VAC 50/60HZoutput:DC 5V 2ADtail:1. The small drill can use 3V-6V 3A dc power，or with our power supply which 5V- 6V 2A dc power.2.Use high-grade silver grind arenaceous aluminum alloy shell，is exquisite.3.Used for: circuit board， PVC plastic board， wooden board， thin plate， thin plate， thin aluminium plates， etcPlease note: chuck clamp range of 0.8-1.5 mm.Package include1x micro electric drill1x power supply