One thing I noticed was that bolting seemed to be a one-man job, with a single ironworker tightening the nut with an electric wrench without the need for anyone backing up the head of the bolt on ...

The user twists the black grip of the wrench to set their desired torque value and will hear a "click" once the nut or bolt they are tightening is properly tightened. It is rated from 10 to 150 ft ...