Key Features Side A: AN-4 Female.;Side B: AN-3 Male.;Reduces from female to male.;Works with all AN fitting brands with 37 degree flare.;6061 aluminum with Type II black anodizing for excellent corrosion resistance.;Compatible with water, coolant, air, oil, and most fuels. Side A: AN-4 Female. Side B: AN-3 Male. Reduces from female to male. Works with all AN fitting brands with 37 degree flare. 6061 aluminum with Type II black anodizing for excellent corrosion resistance. Compatible with water, coolant, air, oil, and most fuels.
