VIDEO RECENSIONE 1. Food Grade 304SS 2. Slotted Post,easy to build coils 3. Heatproof Drip Tip made of SS and teflon 4. Anti-Spitback design 5. Original Edition: 22*20.5mm,Top Airflow Control 6. MINI Edition: 22*13.5mm,Great Flavor Note:Mini and original edition will be all in the same gift box.