Check out the newest Cthulhu Mods Diver RBA For Cthulhu AIO/Billet Box.
Features:
1. Quiet bottom airflow. Actual MTL configuration, with four air pins: 1.0mm, 1.2mm, 1.4mm, 1.8mm
2. Diver RBA works as an RDTA configuration. The coil is close to the drip tip for a better flavour.
3. Two chimneys for different coil building and liquid.
4. Super dome-shaped chimney for improved throat hit and superior flavour.
5. Diver RBA is fully compatible with the Boro tank.
6. Threaded 510 connector.No need for an adapter