Yeah that should be 2.8-3.3cm for sure.
For added fun, two tubes of roughly that size that air seal fit one inside the other makes for a slide didgeribone.
addendum: https://www.youtube.com/watch?v=A1d7Eztj7Eg
alt Hacker News
For added fun, two tubes of roughly that size that air seal fit one inside the other makes for a slide didgeribone.
addendum: https://www.youtube.com/watch?v=A1d7Eztj7Eg