I'm not sure what model the finger break is, other than old
Having a break made a lot of our work really easy, i would highly recommend getting one if you can. It just opens up a lot more possibilities for your team.
As for the fiberglass rods... I believe we ordered them from McMaster (
http://www.mcmaster.com/#fiberglass-rods/=5ykz61). As for bend radius... we haven't broken one yet
We have some wire mesh tubing that will be going around the rods in case they break - it'll catch and contain any small pieces that would otherwise go flying into the crowd. Needless to say, we'll be bringing a few spares along, just in case.