Most stingers pull right out. I save them with an i.d. of the pipe they came with, on the remote chance that I'd sell the pipe and want to offer it. I have one "mandatory" stinger in a Kaywoodie Drinkless, and actually it smokes well, no noticeable restricted draw, and just a few extra seconds to unscrew and clean it off. Stingers don't seem to do much. They were big in the Twentieth Century when pipe smoking was at its peak, offered as a competitive edge. System pipes, the Magic Inch, various types of filters, and other variations were offered as irresistible features to snare pipe buyers. I recently bought a SP estate pipe, an English Plymouth, that had a stinger, easily removed.