Anyone use those expandable stem casters on their brew stand?

[ghart999]

I am trying to understand how these things work. I know you can tighten a nut on top that widens the rubber stem to hold them in place within a tube leg. But how do you tighten it down once the caster is already in the tubbing?

For those that don't know what I am talking about, see the EXR models here.

http://www.castercity.com/cm3-stem.htm

 

[mikemacwillie]

http://www.castercity.com/PDF/EXR-Install.pdf

 

[ghart999]

That helps. Thank a lot.