Screw M8 bolts. What type of electric wrench do you want to send?
Domestic electric screwdriver screw M6, M8, maximum to 40Nm, the past production of Tianjin electric tool factory, imported pneumatic tools out, you and Shanghai Electric Tool Research Institute, a group of production tools you need. Beneath them.
How much does it cost?.High precision, can preset torque, called screw gun: Atlas, Cooper, BOSCH, guasheng have tens of thousands of.Cheap electric impact wrench: domestic ZTE, Hitachi, MAKITA and other imported tigers.You can also use an electric screwdriver instead.