Sources for a medium duty T-drive?

Desperately seeking sources for a T-drive. What I mean by that is
something like these.

Milwaukee 48-06-2871 (right angle drive) or 49-22-8510 (right
angle drill attachment)

General Tools 924

Metabo 631078000

Vermont American 17171 or 17172

Milescraft 1390

It has to be similar in strength/durability/ruggedness to those,
but instead of having only one right angle shaft, the driven
shafts would stick out in both directions, like a T. When doing
some research, I have seen a few that looked bulky and heavy,
stuff that would be bolted onto a powerful motor on a workbench.
Using ball bearings for the shafts would be good, it will take a
radial load, but otherwise not heavy duty.

Thanks for any keywords or links.