Brass Knuckles vape pen has become the unique vaping pens accessible in two battery capacities of 900mAh and 650mAh. Also, it utilizes the pre-filled THC cartridges since it is a 510-threaded pen. . CCELL works by using a ceramic core and that heats a lot more successfully than the Brass Knuckles coil method and it’s crystal clear. In our review