Dear customer, due to there is heavy friction between the screw cap and the electric grinder, so when screw so tightly, the grinder may do not roate, kindly please unscrew a little the screw cap, then can work, thanks for your patient, if have any inuiry, can send us message, we will help to slove it in the first time!

Description:

Type name: 3-speed-Drill

Battery:700MAH Lithium Battery

Charging time:2hours

Clamping range: 1-3mm(The default 3mm chuck)

Speed:0/5000/10000/15000rpm/min

EngravingOutput Voltage: 3.6V

Rated Input Power: 22W

Rated Voltage: 110V~220V

USB:micro USB charging

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