For Billet Box Rev 4 only, does not work with Rev 3 and lower. The R4 Boro Tank is also compatible with other Boro Boxes on the market (Boro Box from Sunbox, Boxx Aspire ...).
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R4 Boro Black or White by Billet Box Vapor.
A black or white version of the famous Boro tank for the Billet Box rev. 4 Billet. The tank has a sliding borosilicate glass face allowing easy and efficient filling! All without removing the tank from your Billet Box!