HELP ! "lathe parts" not so much

Hi, YEARS ago I bought some “parts” from a catalog, I think it was AMT, to “make your own wood lathe from any electric motor” it/they were a 4 spur drive and a cup center that fastened onto a 1/2” shafts with set screws. you were supposed to put the spur drive directly on the motor arbor, and make a bed and tailstock from wood, etc. well I used them to repair an old Montgomery Wards wood lathe which I sold 5 years ago after using it for 25 years.

Now I need a new spur drive that will fasten onto a 1/2” shaft and I cant find one.
any clues out there?
thks
K

-- Kai SaerPren