Got a Chapman order in today.
I thought the little 3/4" spacer seemed like a good idea, but with it the extension does not fit into the ratchet very well.
I did come up with something though.
Pulled the handle off the stubby, slid the spacer collar on and put it back together.
It spins freely and should be great for spinning screws out.
There's still a standard bit or two I need, as well as a Robertson or two which I keep forgetting about but I'll order them eventually. This is all for personal airgun smithing BTW.