Original Marshall Revvo 2-050 Casters 70s & 80s Vintage Rare

Description

1 set of (4) original Marshall Revvo 2-050 casters from the 70s & 80s.
Not sure if they were made in the 60s.
These are rare and hard to come by.
These are fine thread and won't fit coarse thread caster socket bases.
They spin and roll smoothly. Threads are good.
These are vintage and used but are in good condition for their age.  As such, they are sold "as is".
If they don't fit your caster socket bases, I won't accept them for return.
Please, know what you have and what you need before you buy these.