[TowerTalk] Lightning Bolt Quad Parts

[Garry]

Hello,

I am trying to find the tubing/clamps that were used on the Lightning 
Bolt Quad antenna to secure the wire elements to the spreaders. These 
used a worm gear clamp which I have but also used some type of 2-piece 
tubing that held the wires to the spreaders. Does anyone know where 
these can be found or how to fabricate them?

Thanks,
Garry - K4OR