The Replacement Airflow Inserts are compatible with Vapeasy Armor Engine Style RDA and the original Armor Engine RDA as replacement parts. Two inserts are included in the package: one is 1.2 x 1.2mm, and the other one is 1.8 x 2.2mm. 2 PCS / Pack. Please Note: This product is wihout logo. Suitable for: Black without LOGO: Sand Blasting With LOGO:... Learn More