Fitting is made from billet alum. that has been anodized to protect for corrosion protection. Threads are -8 ORB on both fittings with the inlet having the industry standard JIC 37 degree to allow the racer to hook most all AN hose ends to the fitting. Inside the fitting toward the bottom of the bore is a fuel resistant O-ring that seals the fuel rail to the fitting for a leak free application. Hex is .875".
Racer can choose inlet or cap fitting from the drop down menu.