platforms with office chairs wheels (Irlams o' th' Height M6 7RR)

Platforms with office chairs wheels.
I used these in my previous workshop. There were very handy to move furniture around and adapt the workshop to the type of project I was working on.
I don't need them anymore so hopefully I can pass them on to someone that can make use of it.
Sizes are:

56*91cm
58*83cm
53*42cm