<<There is also a deep socket with flats around its top and bored out to
accept another socket. On its working end the "inner" socket engages the
flats of the shock shaft and its other end has a square drive for a
ratchet. I have a kit like that with different sized sockets for the
nuts and differently configured drivers for the shafts.>>

Oh Guru of ID and all points east.

I have seen one of these double walled socket's but not within the
confines of the money sucking, very habitual, and there like like
clockwork, once a week, Dr. Doomster, Happy Snappy Truck.

Who manufacture's this fine tool by the way?
Is there actually someone's name scribed into the outer walls of it?
( and I'm not talking about your engraved initials )

Just Inquiring Georgie.

Maybe I need one to park with the rest of the "use it once in a blue
moon" specialty tools.