The BB6 The bb6 adds yet another dimension to your dynavap collection. Its full glass construction features a 10mm and 14mm male connection which enables this stem to be connected to 10mm and 14mm female connections. The BB6 also has a lot going on in the way of vapour conditioning with 6 glass beads and 9 divots which create turbulence  as the vapour travels through the stem. This stem also has an airport which is a staple for dynavap stems. Dynavap Tip NOT Included Included 1 x BB6