This airflow ring replaces the standard straight 22mm air ring and means flow/beauty rings for 24mm mods are a thing of the past!
Tapers from 22mm to 24mm at the base.

MTL Airflow ring sizes: 1.8, 1.6, 1.4, 1.2, 1.0 & 0.8 mm
DL Airflow ring sizes: 1, 1.2, 1.5, 2.0, 2.5 & 2.7mm