These are replacement coils for the Cylo Vaporizer from Yocan.
For the uninitiated, C4-DE Plus is a ceramic coil that was engineered to provide you the best dabbing experience thanks to improved heat retention and enhanced vapor production.
Ceramic is known for its ability to hold off heat causing the coil to facilitate a low, slow burn every time it gets fired.
Now what that does is it ensures that all the active ingredients are activated since the heating process is slow.
In addition, it allows the consumer to inhale vapors and not smoke (which by the way is way healthier) as the wax concentrates are not heated to the point of combustion.