Dixon® Acetylene Coupling, Left Hand, Fitting/Connector Type: Coupling, 3/8-24 x 3/16 in Nominal, Female UNF x Hose Shank, 7/16 in Hex, Brass, Domestic Dixon® 1540306K Left Hand Acetylene Coupling, 3/8-24 x 3/16 in Nominal, Female UNF x Hose Shank End Style, Brass, Domestic