i dont know, but bowls usually go out quick when im having one if no one is hitting it. We usually have to relight it every time. And with blunts, if no one is smoking it, its not really burning all that much. It will stay lit, but its burning when no one is hitting it to such a point that if you dont hit it fast, the blunt will actually go out, and you have to relight. So it doesnt really amtter to me, jsut make sure if it is actually burning your toking, otherwise,, it doesnt amtter.