Round And Square Option
How to use in real life:
2WD tractors struggle on slippery ground when towing a heavy trailer.
This tool is used to apply force upwards from the bottom of the trailer's drawbar.
In this way, some of the trailer's weight is transmitted to the rear wheels of the 2WD tractor.
As a result, the coefficient of friction of the rear tires increases and the possibility of skidding decreases.