Brass Knuckles vape pen is among the special vaping pens readily available in two battery capacities of 900mAh and 650mAh. On top of that, it makes use of the pre-filled THC cartridges as it is a 510-threaded pen. The vape pen on the outside has the exact form comparable to a pen. At the end of the pen, it may in shape five hundred thread cartridg