Rotation speed and torque can be changed in three stages according to the purpose.
1, The improved gear and shell increases strength by 20%.
2, USB Type-C is used for the charging port, which has no terminal direction and it can be connected with no worry.
3, An anti-drop cord can be attached.
Precautions
1, Ought to read the instruction manual at any time
2, Be wary of the short circuits and electric shocks when working with electricity.
3, Overloading may cause screws to break or injury.
4, Keep away from children when storing at home.
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