You can solve this? A magic wrench has been born! Open gear wrench beyond automatic gear wrench. 

hi~
This time, a lot of people have been looking for...
Cars, air conditioners, piping... You've been looking for it a lot.
It was released for the first time in Korea, so I made a video like this.
As you can see in the video, if both sides are blocked,
But if you need to loosen the hexagon bolt or nut,
I had no choice but to work manually.
I think you can work comfortably with an open gear ratchet wrench.