The Ion model by Mobius Glassworks is a bubbler and part of their Atmosphere Series. This particular Ion model features their Matrix perc. It stands approximately 10" tall and built on 65mm tubing. It has a solid foot that is approximately 4.75" in diameter and a 19mm bent neck. The all glass bubbler is fitted with a recessed 19mm joint and a 19mm slide. The down stem/perc is welded to the bottom.
19mm bent neck
19mm recessed joint