The classic glass steamroller design has been around for ages, but this one stands out since it has a boxy look with flat edges so there's no way it can roll away. This heavy duty glass pipe is handmade from heat-resistant borosilicate glass with thick walls that can endure heavy use. At 3.5 inches long, this palm-sized smoking pipe is easy to carry, pack, and light up. Four color combinations are created using opaque squiggly designs set within transparent glass. Like all glass steamroller pipes, airflow is controlled using the carb set directly behind the bowl in line with the mouthpiece.