V- Rollers

Hope I'm not breaking any rules Andy.

Here is a supplier for :

http://www.castercity.com/vgroovew.htm

Nylon or urethane works very well. It allowed me to paint the inverted 1 1/4" angle iron with "Hammerite". No paint has worn from the tracks in over a year now

No Tom Your OK!
I have recently bought some cast iron V-groove castors from "Ace castors" in Irvine Texas. The price seemed good.