http://www.gentlemansvapes.com/products/v2-mega-oil-cartridge-holds-1-gram-new
That guy holds >1g if capacity is what you are after. It's our current best seller.
A few questions. The 1G cartridge is good for just 30 fills or more? Can i purchase a pack of replaceable nails? I don't see that option on your site and I already have most of the components. I'd like to purchase a pack of nails and the 1G cartridge. Let me know, thanks.