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
316 Stainless Steel, 1 1/4 in x 1 1/4 in Fitting Pipe Size, Coupling - 2TV67|60FC111N114 - Grainger
Stainless Import Fittings 34X14304CO Coupling
Value Collection - Black Coupling: 3/4″, Threaded - 36997161 - MSC Industrial Supply
Garvin RC-75 3/4 Inch Galvanized Rigid Threaded Coupling (Rc
Clemco CF Brass Coupler for 1-1/4 inch threaded nipple
5 pc) NEW Aluminum Coupling Tubular Threaded 4" inch Connector Fitting Pipe | eBay