These high-quality replacement coils are made with precision engineering to facilitate maximum compatibility with the Yocan Iris device, thus ensuring the smooth airflow and sturdy construction of these coils for a long time. The QTZ vape coil has 0.8-ohm resistance that supports you to adjust the voltage from 2.5V to 4.2V, thereby allowing you to set up your experience by yourself. 

Its quartz material heats and concentrates evenly, thus keeping the original flavor of the concentrate and giving you a large amount of vapor. These high-end vape replacement coils are sold in a pack of five, which allows you to easily change the parts of your vaporizer and continue using it like new for a long time.