Going to the store in a moment: What tool does reaming require?

[Kompulsa]

OK, don't forget the Digi-cool, (just ordered mine), the pipe stretcher, a bucket of steam and the propane powered circular saw. left handed monkey wrench.

lol.

I always was fascinated by air conditioning since I was a child, but didn't get the opportunity to actually do it until last year when I got an old window unit, but, I had no torch so I still couldn't do much until today.