set of 8 Vintage Metal Lathe Collets 3C ? 5C ? Approx. 3 1/4" long 7/8" dia.

Description

Offered is a set of 8 Vintage Metal Lathe Collets from an estate
I think these were for a metal lathe, not sure of the size? 3C ? 5C ?
They are approx. 3 1/4" long overall, the heads are approx. 1 1/4" dia.
The threaded end is approx. 7/8" dia. with threads that look to be a fine thread
there is an approx. 1/8" wide keyway slot on the sides
The ends are marked with the hole sizes, I do not see any company marks on them
hopefully someone can put them to good use!..................................... Thanks for looking! ....
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