New steel braided hose end.  This is not an adapter fitting!  This is a hose end.  This hose end is installed on AN6 steel braided line, and then installs directly onto an LT1 or LS based fuel rail, by a threaded retainer (on the fitting).  This is for the 3/8" line on dual line fuel rails (as opposed to the smaller 5/16" line).  Fittings are sold individually. Fits the following fuel rails.

92-96 LT1 Corvette (the 3/8" line only, you will need a separate 5/16" hose end also)
93-97 LT1 Trans Am/Camaro (the 3/8" line only, you will need a separate 5/16" hose end also)
All single LS1/LS2/LS3/LS7 fuel rails (only 1 required)
All dual LQ4/LQ9/LS1 fuel rails (the 3/8" line only, you will need a separate 5/16" hose end also)