In almost all of them, you put concentrate in a tiny chamber that's in roughly the same place as the THC oil in the vape pens. Online and in-real-life reviews for the pens are mixed, however ...

Vape Mod Kits are ideal for users who want a customizable ... enthusiasts who prefer concentrates over dry herbs or oils. Oil vape pens are designed to vaporize thick oils, including cannabis ...

Some wax pens come with starter kits that include both types ... since CBD is legal in all 50 states. Oil cartridges can be attached to a vape pen battery if both are 510 threaded.