I am looking to find the smallest diameter rba coil heads to possibly make a diy carto with. Thing is I believe cartos are 9mm. So really looking for the most slim of them all. My goal is to make a rba for the billet box that actually has 2 screws for the positive and neg.
Sent from my SAMSUNG-SM-G870A using Tapatalk
Sent from my SAMSUNG-SM-G870A using Tapatalk