Avell 10X 1.0ml Full Ceramic Carts Easy to Fill Storage Tubes for Liquids Lab Test + Plastic Tube

This is the best cartridge on the internet right now no matter where you shop. The seller is very responsive and the package arrived earlier than expected, well packaged and undamaged. The cartridges will work with thin or thick oil or liquid. They will take all the power you can push on them and they still won't burn. They will give you the best taste and biggest vapor clouds of anything else. "Once you tap the mouthpiece on tightly (with a hammer or similar) they will NOT leak. However, you will never get the mouthpiece off. If you're looking to fill your own juice into a pen cartridge, this is the way to go! Even if they are "one-time" use.