And while we're at it... another what is it?

[3jakes]

Socket adapters?
Friction ball placement is closer to one end than the other.
On the 1/2" one, one ball is larger than the other.

 

[sk farmer]

inserts for female square drive ratchets would be my guess. proto as well as others made them.

 

[jmcf1949]

Looks like what we used to put in tee slots of a stamping press to make moving dies easier. The dies had a solid bottom plate with cutouts for scrap to fall through,

 

[matt_i]

My guess is a reversing ratchet (maybe low profile) where one pushes the detent thru to the other side to select Fwd and Rev. No reversing lever on this tool.

 

[ex-x-fire]

Looks like replaceable square drives for snap on & williams adapters.

 

[3jakes]

Looks like replaceable square drives for snap on & williams adapters.

Like in the GSAF1F • 1/2" internal drive x 3/8" external drive that is non-impact that everybody uses on their air tool.

I think you got it.

 

[raddksn]

to connect socket to torque multiplier