Steamroller pipes are essentially like your traditional glass spoon, but on steroids. You can get very large hits due to the increased sized of the chamber. The volume of the smoke is similar or close to the amount you could smoke in a bong. Steamrollers are known for being harsh and hitting hard like a train, due to not having water filtration and ice cooling chambers, however people tend to purchase these for that reason alone. They also love the fact that a steam rollers smoke volume is similar to bongs with the added benefit of having a low profile smoking device like the glass spoon. Steamrollers basically have the best of both worlds: large rips and are low profile and on the go devices!