FEATURES :• Dimensions: 2-5/16" x 15/16" (Including Drip Tip and Threads)• Diameter: 24.5mm• 510 Threaded• 4.0ml e-Liquid Capacity• Top Fill Swivel Design with Larger Fill Hole• Large Heating Air Tube for Higher Airflow Efficiency• Top Airflow Control Valve• Leak Resistant Design• Large Dual Adjustable Airflow Slots• Ultra Long Wide Bore Delrin Drip Tip• Large Central Airflow Chamber• Stainless Steel Construction• Utilizes SMOK X-Baby Beast Brother V8 Core Atomizer Heads for Variable Wattage• Includes (1) V8 X-Baby Q2 Core 0.4ohm Dual Coil Atomizer Head (Pre-installed) (Designed for 40 - 80 Watts)• Includes (1) V8 X-Baby M2 Core 0.25ohm Dual Coil Atomizer Head (Designed for 30 - 50 Watts)• Optional V8 X-Baby RBA Head (Sold Separately)