These people will tell you anyting cartridges are not guaranteed brought free 1 gram cartridges can't talk to them the first one has a half a gram to 3/4 of gram left in it with a burnt-out atomizer it's your battery it's also funny all the other cartridges work in my battery so another words they don't guarantee anything oh you bought it 8 days ago days ago would you think I was going to smoke 3 grams in 8 days. And it has been shown in clinical research to help with joint pain due to inflammation I thought problems were over with with Metro prior to this they took $25 out of my rewards. Their answer to this $70 cartridge was will give you $5 off on another cartridge. You burnt me twice it's not happening a third time