Cobra extracts has created the smoothest hitting CO2 extracted THC oil for sale in 2018. The potency is out of this world for CO2 cannabis oil. The THC percentage on one of their strains is 88%. This prefilled vape cartridge won first place from Cannabis cup this year in Socal. We gave this third place on our list of the best oil cartridge in 2018 because of a couple of reasons. The design of its vape cartridge is very efficient, however, Plug and Play allows for bigger dosages which feels like higher dosages. Also, the weight of THC oil in the cobra extract cartridges are less than a half gram for sale.
Once all the CO2 extract oil has been vaped, the cartridge can be refilled multiple times. I managed to refill these cartridges with distillate oil 3 times before having problems with them. Nonetheless, the Cobra extract brand has made it onto our list of the top 3 prefilled vape cartridges in 2018.