【Good Material】CNC Machined from 6061-T6 Aluminum; Black anodized for great appearance and anti-corrosion.
【Specification】Specification : 6 AN (male) to 3/8 & 5/16 (female) GM Quick Connect Straight Adapter Fitting.
【Applicable】This is both a feed (3/8") and return (5/16") setup, which converts to AN6.
【Works Well】These ends allow you to use steel braided or a variety of other AN hose and fittings when plumbing your LT1 or LS swap; These are #6 threads for the hose end; These just push on over your existing fuel rail ends and are held in place with durable clips.