Lithium impact wrench with a brush, the brush without good or good?
Must be a good brush, but currently on the market most of the design the brushless motor wrench is too complicated, it is difficult to adapt to the domestic use of timberman high strength, iron powder, fast heating machine etc. the use of bad environment, prone to the rotation of the motor will not.
Impact electric wrench is mainly the initial bolt, and its use is very simple, that is, pointing bolt, pull the power switch on the line, the final tightening must use the fixed torque wrench.
The electric fixed torque wrench can be both tight and tight at first. Its use is to adjust the torque first, then tighten the bolt
