We made these, and more, for a customer several months ago. He has since disappeared and is no where to be found leaving us with about 2000 of these all bagged up ready to go and unpaid for. These are made in the USA and as it turns out people that vape don't care about that and would rather buy cheaper made in China tips.
Anyway. If you are interested in buying these, please let me know. I only want to sell these in bulk.
Material is Black Delrin and 316 Stainless. They do not have o-rings installed.
They measure about 5/8 long 1/2 Dia. and the Dia. for o ring is 8.5mm