Just stumbled across this the other day. I’ve been trying to figure out a way to make roll bars, cages, and exhaust pipes without soldering as my soldering skills are, well, crap. For those who don’t know, I’m a mechanic. I’m around aerosol cans of WD-40, Brake clean, silicone spray, etc. They all come with these red straws.

I tried using them, but when bent too far, they kink.

So trying to find a way to prevent this, I found these guys are the perfect size to fit inside the red straws.

The paper clips provide the perfect support for the kink-less, mandrel bent look.

Hope this is helpful to you guys.