As affirmed previous to there are 2 main types of marijuana bowls : normal bowls and slider bowls, if you have a carburetor bong (regular bong) you will require to use the normal bowls since you DONT require to slide the bowl in and out of the bong, as an alternative carb bong use a "carb hole" to organize the smoke in the chamber. clearly then this means that if you have a slider bong, you require slider bowls and stem, make sure out our slider bowl page to find some cool weed bowls.