YOCAN EVOLVE PLUS QUARTZ DUAL COIL (5 PACK) 
The Yocan Evolve Plus Quartz Dual Coil features the coils wrapped around quartz posts instead of fiber wick, producing clean, fresh flavor. Heats quickly, providing large, potent clouds.
This coil can only compatible with the Yocan Evolve Plus
NOTE: the coils are threaded at the top for use with the coil cap included with the pen, but no cap is included with these coils.