t writes:

Is there a chuck that will fit on a speeder wrench to make it a de facto
bit and brace? B and B's are hard to come by, was trying to see if I
could make one of my speeders do double duty. Helpful when working on
fence posts way out in the pasture away from a drop cord, and don't need
recharging.

I have a small chuck that has a 1/4" hex stub on the back of it.
It looks like it was made to plug into one of those quick-change
drill bit holders. It's only a 1/4" chuck, so probably smaller
than what you had in mind. It's marked "Jacobs MULTI-CRAFT USA".
I've never used it for anything.

You could probably have someone make an adapter that would fit a
regular chuck, but I agree with the guy who said a speeder handle
might not take as much torque as you'd like-- the ones I've seen
are made for speed, not torque.