Pros : Strong, stiff, sturdy, yet easily cut with a dremmel.
Keeps lines perfectly straight -- especially as compared to other reinforcement products at Delphi -- because of its relative thickness.
Cons : Doesn't "take" the solder as easily as copper-coated or pre-tinned surfaces. I was able to work with it by applying a clean hot iron until the rod was HOT before applying solder.
Other Thoughts : Since weight was a mostly-useless number for my purposes, I waited for a discount coupon, and blindly bought a box. So that nobody ever has to again:
My package consisted of 32 pieces of 6' (72") lengths of 1/8"×5/16" flat metal rods.
The box was secured to a complementary length of wood (a standard lumberyard 2-by-4), presumably to keep the metal from bending. B-)