Set of 4x 4x12 Carlsbro B cabinet Caster cups 1970

Set of 4 brass metal caster cups 

these came off of a 1970 Carlsbro PA cab 

you can of course use these with other makes of cabinet, I was saving these with the aim to use them on a home made cab, I have far too many projects on the go so I’m sure someone else can find a use for them. 

no mounting screws(they were stripped) just the cups 

The last photo shows one of these installed so you get an idea of how they look! 
If you need dimensions or anything else just ask