Crossing Tech has developed a way to fill a lot of carts in a quick and easy way! Load your distillate or thick oils into this handy 25ml filling gun. It will maintain a heated chamber so the oils flow to your carts easily. No more mess with spills and runs all over the outside of your cartridges. And with the temperature control, you'll never burn your oil. The Crossing Tech Cartridge Filling Gun can dispense in amounts of 0.5ml, 1.0ml, 1.5ml, 2ml, and 2.5ml. which covers pretty much every consumer cartridge size.