No need for expensive and heavy hydraulic torque wrenches. You can control bolt tension using our original electric impact tool,otherwise, by your hand torque wrench. Tightening speed is more than 3 times faster than hydraulic wrench.
When the nut is tightened with it, the bolt-head never co-rotates. No other tools, like a spanner, needed to prevent the bolt-head’s co-rotation. Secret is on the back side with no serration against slipping.