When smoking from a bong, having a nice downpipe is key to getting the kind of smoke you desire. The downpipe is the piece in which the bowl sits. It is this piece that determines whether or not the bong is air tight as it must fit the bong perfectly. If you purchase the wrong size downpipe, your smoke will sadly never be what it could be. So check out all of these crucial downpipes that can make or break your smoking experience. Roor 3-Part Downtube – 18.8 Roor returns to bring us another glass product that is used in smoking. The high quality borosyllicate glass from which this piece is blown is top of the line. No other company uses higher quality glass or makes their pieces thicker than Roor does. Seperated into three parts, this glass bong downpipe is one of the more heavy duty models offered. Another perk of this amazing piece of glass is how affordable it is. Anyone can make a glass downpipe of high quality and sell it for a ridiculous price, but Roor focuses on the customer first and foremost. Click here to see price and get more info   G-Spot – Downtube/Diffuser 14.5 This downpipe is made by the well known glass making company of G-Spot. Also called a downtube, the downpipe is easily one of the most crucial parts of...