304 Stainless Steel, 1 1/2 in x 1 1/2 in Fitting Pipe Size, Coupling - 1LVN6|4307000068 - Grainger
Horiznext npt 1/2 (means the inner diameter of the thread is 3/4 inch) cast female taper threaded pipe coupling, stainless steel 304 coupler for mush tun cooler and shower hose, 2 pcs - Amazon.com