Very good coils.
A nice smooth vape from them and you can easily chain vape due to how quickly the coils absorb e-liquid again from the slots around the coil.
Only part to watch out for is the seal underneath where it joins to the conductive metal for the battery contact,
On my first coil that part was slightly out of place which caused leaking into the airflow valve on the tank.
Lesson learned is to study parts before use.
All in all a very good Coil for smooth and flavoursome vaping.