I bought a carbureted pipe, but still haven't used it. A novice like myself still prefers using a pyrex one-hitter. It's a very short one-hitter but I've never burned my fingers or lips the two times I've used it for marijuana. On the other hand I burned my lips black the first time I smoked crack. I guess the usual crack pipe isn't made of pyrex glass, but just regular glass, perhaps to keep the vapor hot as it passes through the short 4-inch length of tube glass. Otherwise, I suppose too much residue would form. I guess crack vapor doesn't stay vaporized easily or for long.