The OBS Engine SUB features the same great design as the acclaimed Engine RTA and now utilizes the Engine SUB atomizer heads. The OBS Engine SUB features a large 25mm diameter design with a high capacity 5.3ml quartz glass tank. The hidden side fill design allows you to conveniently refill the tank. The OBS Engine SUB utilizes a top adjustable airflow valve with an advanced 360 degrees airflow circulation system which helps recycle the airflow throughout the tank.

The OBS Engine RTA features a 304 stainless steel construction in a unique leak resistant design. This tank utilizes Engine SUB 0.2ohm atomizer heads designed for variable wattage. The Engine SUB atomizer heads feature a vertical coil design with organic cotton and has a recommended wattage range of 40 to 100 watts.

Replacement coils available here:

Features and Specs:

• Dimensions: 2-3/16" x 1" (Including Drip Tip and Threads)
• Diameter: 25mm
• 510 Threaded
• 5.3ml Capacity
• Hidden Side Fill Design
• Top Adjustable Airflow Valve
• 360 Degrees Airflow Circulation System
• Leak Resistant Design
• Utilizes Engine SUB 0.2ohm Atomizer Heads for Variable Wattage
• Vertical NotchCoil-Style Design with Organic Cotton (Recommended Wattage: 40 - 100W)
• POM (Delrin) Drip Tip Shield
• Quartz Glass Tank
• 304 Stainless Steel Construction
• 510 Drip Tip Compatible