510 Cartridge

A 510 cartridge is the standard screw-thread oil cart that fits nearly any pen battery. In the THCA market carts carry extract — distillate or live resin — whose finished-product COA is non-negotiable: potency plus, ideally, residual solvents and additives, because oil’s history is exactly where the vape-crisis-era cutting agents hid. Hardware notes worth having: ceramic coils dominate now, airflow and coil quality decide the experience more than battery brand, and a cart that arrives half-empty by volume may be normal headspace — filled weight, printed on the label, is the number that settles it.