Help IDing odd ball Snap On

[fiv216]

The only thing i could find online about this was from an old 72 catalog.
Idk, seems cool? Just no clue what the hell it's for

Sorry, on my phone. Cant get the pics to upload,

part # WA 28-20.

 

[WWIIjeep]

5/8" 12-point/double-hex socket included in WA-308 caster-camber adjusting tool set for Chrysler products.

 

[Mr.Ric]

can't really see it, but if it's 3/8 square to 13/16 square, or larger, it could be an invert plug socket, like on older, mostly Europeans.

 

[fiv216]

Well then,

guess I wont be using it anytime soon