Hey, i don't know if there's a thread up about this already or not but i'm still going to post and hopefully somebody can help me ASAP. So i'm buying an oil rig with a 19mm male direct inject and i was wondering what size adapter do i need to buy? I know the options on the website are either a 14mm or 19mm adapter but i'm completely lost, i don't know if i buy the 19mm adapter since the joint is a 19mm or a 14mm adapter? Please help! I'm all new to this so excuse me if i look stupid asking the question i just want to know what to buy so i can order it soon and start dabbing, thank you all to anyone that answers!