K-C Tool, Kansas City, MO.
See if they have one in Heyco or Wiha maybe?
These are also made by Hazet. Not sure who carries them. Last time I looked the only distributor was in Florida. (That was a few years back.)
The nomenclature makes searching for them challenging.
You're looking for:
Drive Plug
Ratchet Adapter
Drive Coupler
Ratchet Plug
aka a few others I can't remember right now