Found this at Hobby Lobby. You guys may already know about it. It's from K&S, but not the normal aluminum tubing you get by the stick. This comes 3 pieces to a card. It's like 1/8", 1/4" and 3/16" give or take a little. It's like annealed aluminum tube. Super easy to bend!
I made some exhaust pipes, and was amazed at how easy it was to bend to shape. Looks a bit more polished than the normal tubing too. Anyway, I thought it's neat. Drawback is only one of each stick, but for me, it was worth it to make one set of exhaust. tb