There are 2-3 different types of vape ends. The best option is to bring the pen with you to match it up to the cartridge your going to used.
There are a few types of vape pens. Only one will fit your "battery" (what they call the main part since it is in fact just a battery). There is only one type of cartridge for a given battery. So if it looks like your cartridges, then it probably is. There's nothing tricky among them since they all look distinctly different.
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