when you get the coil the airflow ring is sold separately!! Check out the OXVA UNI Coil Based Airflow Control Ring, a replacement part for those that lose the original one, implementing a dual slotted airflow control ring, threaded coil installation, and is adjustable.Compatible with the OXVA Uni Coils 0.3ohm, 0.5ohm and 1.0 ohm.
Those OXVA UNI Coils are perfectly compatible with OXVA Origin ,OXVA X Kit
Brand: Oxva
Unit: 5pcs/pack
Resistance: Mesh 0.3ohm(30-42W), Mesh 0.5ohm(20-25W), Kanthal A1 1.0ohm(10-15W),0.2ohm(55-60w)
Package: Simple Packing