There used to be a lot of sets like this back in the day
https://www.ebay.com/itm/253743452799?ViewItem=&item=253743452799
I guess your piece would allow mixing the sets w modern? I think this is a
pre-1950s thing.
Couple of Herbrand catalogs here, might be in there w explanation, might be
too late
https://archive.org/details/internationaltoolcataloglibrary?and%5B%5D=h
erbrand&sin=">https://archive.org/details/internationaltoolcataloglibrary?and%5B
%5D=herbrand&sin=
On Fri, Feb 15, 2019 at 3:43 PM Jerry Herrman wrote:
> I have a 3/8" drive socket extension about 4" long. The female end is a
> standard square. The male end, unlike a normal extension, has a hex shape.
>
> Anyone know what this was intended to attach to? I am guessing there are
> hex
> shaped sockets out there that could be driven with this extension.
>
>
>
--
Kirk Eppler in HMB, CA, heading home to walk the dogs in the rain.
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