The Rainbow Li does come with a CF pole.
The silnylon version comes with an aluminium pole (144", 8.6mm, Easton 340 ) or CF (Easton 3.9) (your choice when you buy it)
The poles are stamped so you should be able to read what it is on the pole itself.
Ansco here in Australia has some and I think Remote Repair, Point Cook, Vic, stocks some too.
https://www.ansco.com.au/Easton-s/4565.htmEasy to replace the aluminium type, I have not tried the CF version .
You pull the tip out and you should be able to figure it out after that.