Most cartridges is often refilled with the personal THC oil, CBD vape oil or e-liquid prior to deciding to will need to remove them. If it’s a 510 type cartridge, just unscrew the mouthpiece and fill the tank up. You might need to use a syringe for accuracy. Editor’s Notice: https://the1010thcvapes56788.develop-blog.com/40547721/the1010boys-an-overview