Introducing the SXK PROtocol ATOM MK-02 Style RBA Bridge: made from 316 stainless steel and ready for any Billet / BB / Boro Tank / Vandy Vape Pulse AIO / Cthulhu AIO / Boro Mod - like a boss! Plus, it comes with two air pins (3.5mm + 4.0mm, one pre-installed) that are compatible with just about all of the PROtocol Atom Air Pins - yes!