Speedflow -12AN Male Flare to -20ORB O-ring Boss / Port Male Fitting. Manufactured from marine quality 6061-T6 billet aluminium for superior corrosion and fatigue resistance. Made from a billet rod and fully machined in a single process in a CNC machine. Black anodised finish. Compatible with Female O-ring Ports (Fuel Rails, Regulators, Filters, Pumps & Tanks etc...). This fitting seals on the O-ring please make sure you have a female with O-ring groove.