GOON 24mm clone Chuff cup

This chuff cup is designed to fit GOON 24mm rda CLONE, this because some of them have got an internal chamber diameter a little bit smaller than original GOON 24mm.
In this case, thousand of accessory available in several internet website, can't be used, so i designed this to fit my own GOON 24mm CLONE.

O-RING NOTE:
i designed to be used with o-ring 1x12mm but it can be used even without if it fits perfect as in my Goon.