Brass Male To Male M16x3/4, 3/8"ID Stem Hose Fitting is new and in excellent condition, not in original packaging. Fitting is a male to male threaded fitting. 3/8" ID. Total length is 2.5", short end is a threaded M16x3/4 - 5/8" length and the longer end is threaded M16x3/4 - 1-7/16" length. The hex is 1".