I have tried everywhere, amazon (old stock horizontal) , I'm new to vaping and have got the subox mini which comes with the new vertical coils, I was just browsing for replacement parts and as of yet cant find anything, O rings , coils, spare tank , glass, I know I can buy a different tank but this kind of spoils the look of the subox, I could use different coils but being new Id rather take baby steps than start messing with RBA's ect. I would rebuild old stock heads but really don't want to buy heads just to strip them to rebuild them, Just for anyone looking the new coils are 0.5 ohms / 15 - 50w , I have seen tons of the old occ heads you can tell the difference straight away, the old occ coils are rated 15-30w