15/16 and 24 MM "Dual use" which means it probably doesn't fit either well.
Those type tools were sold well into the 60's or 70's, mostly as import tools in the discount trays and auto parts stores, hardware stores and even some drug/grocery stores.
Low quality and lower prices then, and still lower now, other than possibly as curiosities.
Those were knockoff's of Duro/Industro and other early brand tools which were not terrible back in the day, but no comparison to what came later in the late 30's through the early 50'swhen tools generally got better across the board, (the higher end tools were pretty good earlier, but the really cheap tools were simply atrocious back then...) The cheap knock offs were poorly made tools from piss poor metals and finished badly.
Roughly equivalent to many of the cheap Asian imports, or the "better"Indian made tools (WTF is with India that they can't seem to make ANY even semi decent tools?

)