Garvin RC-50 1/2 Inch Galvanized Rigid Threaded Coupling (Rc
FxF NPT threaded coupling
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