Amazon.com: LOZOME 3/4" Male x 1/2" Female Thread Reducer Bushing Pipe Fitting, Adapter, Stainless Steel SS 304 NPT Reducer Bushing Pipe Hose Fitting : Industrial & Scientific
U.S. Solid 2pcs Brass Pipe Fitting Adapter, Male Pipe x Female Pipe, 1/2" x 1/2", 1/2" x 3/4", 1/4"x 1/4", 1/4" x 3/8", 1/8" x 1/4", 1/8" x 1/8", 3/8" x 3/8" -