AND while you are it, throw this in for free too".
The range of implements is quite extensive to include tillers, plows, cultivators, back blades, thatchers, and more.
As with Category 3 hitches, the spacing between the lift arms of a Category 4 hitch is variable.
It was an advantage in cases where it encouraged the sale of implements e.
They also presented the problem of incompatibility between brands of tractors and implements, applying pressure toward that many farmers resented.