From Straight Up Supply co. The new and improved airflow with a 3mm pin
The Kerch RBA. There is new engraving on the chimney and cap, for the black, both the cap and chimney are coated.
Black Anodized Kerch
3mm airflow pin
1.2mm airflow pin too
It took a few tries to get the wicking perfect but once you figure it out the flavor is amazing definitely one of my new favorite bridges
Good improvement to the air flow.