... compressors, large torque: 340N.W, it easy removes and installs the bolts c. 12-volt DC power ... , it can work when insert it to cigarette lighter. And it can start the car self-owned ... It can be clockwise, counterclockwise turned, can tight and loose the bolts.e. European high specification “CE ... six point sockets: 17mm, 19mm, 21mm, and 23mm.h. Operation simple, no time to study.i. Saving your effort ...