Our VonG, B and M devices are compatible with a 10mm bong without an adapter needed.
The VonG and B devices are tapered to fit a 14mm bong without an adapter needed.
For the units to fit in a 14mm bong, you need the fat mouthpiece adapter.
The black rubber Fat Mouthpiece serves as an optional mouthpiece for many of our devices. In addition, the Fat Mouthpiece serves as a 14mm adaptor to create a seal for a female coupling or water pipe adaptor (WPA). The Fat Mouthpiece will not fit in any DynaStash or SlimStash.