I'm looking to make my own gas mask bong like the one pictured here . I've looked as jumbo sized plastic test tubes but they are not big enough. I just need a link to buy tubes that big. preferably plastic.
I'd say your best bet is a head-shop or smoke-shop as they sell all sorts of accessories for smoking, the tubes could be homemade or makeshift made in a shop by a tradesmen. Lastly smoking out of plastic is not as good as glass it has more carcinogens or something i remember reading about it somewhere. Hope that helps
