Got a rig called the MX-9 from Ready to make the switch? they use cartomizers which they call capsules, and nowhere do they list what the size of the cartomizers are. I know they are definitely NOT a regular standard 510. Maybe one of you experienced vapors can check out the site for me and maybe tell me what they are using. They do have pictures but its still hard to tell. Any help would be much appreciated. I can not get in touch with these people.