The Troll has staggered and slanted 7mm wide adjustable airflow holes (for either single or dual coil builds), a silver plated positive contact pin, a decent sized juice well for more vaping, with less dripping required. The Wotofo Troll is a 22mm diameter RDA.
– Staggered Slanted Airflow Vents
– 22mm Rebuild-able Dripping Atomizer
– Silver Plated Positive Contact pin
– Insulated Drip Tip Sleeve