What types of THC vape pens are offered? The reason as to why cartridges are so common is that they feature a 510 thread that fits each alternate battery or vaporizer available on the market. Pods are similar to cartridges, however, they include their own battery. This would mean that you are able to often turn up your vaporizer whenever you wish to try new things. What exactly are the negative effects of using the THC vape pen?...