The new iSub G tank is a 510 threaded, 3.8 mL capacity stainless steel and pyrex glass tank that’s 510 driptip compatable and ships with a double o-ring, high airflow stainless tip. The iSub G uses an all new, replaceable 0.5ohm single coil atomizer head with a built in anti-spitback screen and Japanese organic cotton wicking. The deck is a two piece design, and the atomizer head slides in and out easily once the two pieces are separated. Airflow control comes from a ring on the lower deck, and with the AFC at full open airflow is enormous. Unlike less-expensive tanks of the past, the iSub G has every bit the airflow capability of the Atlantis II or Kanger SubTank subohm atomizers. Also, the 3.8 mL pyrex tank is easy to fill and has a well-fitted rubber seal to prevent leaking.