This one is from a Korean shop called XTRA Mile Vape. Apparently, there was an earlier version that didn’t work in a Billet Box properly. The newest version that sold in January/February 2022 works in a Billet Box, “Once the upper part was manufactured again. When the bridge is fastened to the basic connector of BB, it has been modified so that there is no protruding part.”
The Vega RBA can be used in both RDL and MTL thanks to two different air pins both with an AFC ring.
According to Steam and Vape, “Xtra Mile Vape achieves the feat of implanting an adjustable airflow at the base of the pine. The Vega has two pins, one designed for MTL and the other for DLR. Each pin is equipped at its base with a rotating ring to restrict the air inlet and thus has a wide choice of airflow. The DLR pin has a 1.6mm x 4 air inlet and a 2.5mm outlet while the MTL pin has a 1.2mm inlet for a 1.6mm outlet. airflow adjustment has never been so simple and effective!”