Brass Knuckles 900mAh battery

Brass Knuckles 900mAh battery for concentrate & cartridge-style vaping. It offers variable voltage along with a preheat mode for cartridge longevity and battery conservation. Brass Knuckles battery is designed to utilize concentrate oil cartridges and comes in the three variations of Wood, Black, or Gold finish. 
Brass Knuckles 900mAh battery for concentrate & cartridge-style vaping. It offers variable voltage along with a preheat mode for cartridge longevity and battery conservation. Brass Knuckles battery is designed to utilize concentrate oil cartridges and comes in the three variations of Wood, Black, or Gold finish. 

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