OBS T-VCT tank mouth piece

[QxGG]

I went to my local vape shop and they told me nowhere carries it and I probably won't even be able to find it online. Well I can't find it online and I'm wondering if anyone knows where to find one? Literally any mouthpiece that will fit the OBS T-VCT tank. I need the part that screws onto the tank and the part that pops into that peice