Strongest Lego technic gearbox ever "heavy-duty" (+ instructions) 

I hope you enjoyed the video...
I tried a few versions and this one was by far the strongest!
Should I build a 2.0 versions? Let me know in the comments...
I also built:
The smallest 5 Speed gearbox: https// • Smallest 5 Speed Lego ...
The smallest 2 Speed gearbox: • Smallest Lego technic ...
The smallest auto gearbox: • World's smallest Lego ...
The smallest drive neutral Reverse gearbox: • Smallest Drive Neutral...
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Music:
Song: Jim Yosef - Eclipse [NCS Release]
Music provided by NoCopyrightSounds
Free Download/Stream: ncs.io/eclispe
Watch: • Jim Yosef - Eclipse | ...

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