http://boards.cannabis.com/showthread.php?t=59042


If you type cool tubes in that search thinger, you can find all you needed to know and then some about cool tubes. They are called Bake-A-Round by Pyrex on eBay for starters.





b0nger

P.S. Sorry for double post admin, I decided to look up after I posted the first time, as I had an interest also.