Hydraulic Fitting 1" Male O-ring Boss X 3/4" Male O-ring Boss

Brand New Carbon Steel 6403-16-12 HYDRAULIC ADAPTER 1" MALE BOSS X 3/4" MALE BOSS (Tube O.D. / Hose I.D. Size) THREAD SIZES FOR 6403-16-12 HYDRAULIC ADAPTER 1 5/16"-12 MALE BOSS-1 1/16"-12 MALE BOSS To measure threads, Calipers work very well.