What is this for?

[garilla]

I found this 7/32" female to male 1/4" adapter by duro indestro marked 342. at first I thought 7/32 square drive but the 1/4" end should be a female to fit a ratchet, so I don't think it is that. Remember the male end is 1/4". so what is this for?

 

[Lesserstore]

It's for a refrigeration ratchet.
1962 catalog, item C:

 

[Loud Lyle]

The above was made by the same company

 

[d42jeep]

I was just going to suggest a refrigeration tool but Lesserstore hit the mark exactly
-Don

 

[garilla]

Ohhhh I see now. Thanks all for the info