A steamroller is a tube with a push bowl towards one side, the carb hole on the same side, the mouthpiece on the opposite end, and a spoon pipe gets the carb on the side of the bowl. These simple pipes allow you to clear a large amount of smoke in a short time, guiding smoke into your lungs with little resistance and giving you massive hits. There are two distinctive designs for steamrollers, one for herb and the other for concentrates. However, these two styles cannot be interchanged with each other, so buyers will need to choose the right one so that it can work appropriately with their steamrollers.