The Tobeco Helix RDA features a specially designed airflow control system.
Built with 3 "hole-rings" the vapor quality and amount becomes superb.
Features:
* Specially designed airflow control system, three rings to adjust the airflow, two stainless steel, one brass.
* 3-posts design for single or dual coil
* Silver-plated copper pins
* Solid stainless steel body
* 510 connector
* Length 34mm, Diameter 22mm
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