LTWFITTING 1/2 in. FIP x 1/4 in. MIP Brass Pipe Adapter Fitting (5-Pack) HF1028405 - The Home Depot
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Stainless Steel Pipe Fitting, Adapter, 3/8 in. Female NPT x 3/8 in. Male ISO Tapered Thread | Adapters | Pipe Fittings | Fittings | All Products | Swagelok
Adapter Fittings - CHUAN KOK
Everbilt 3/4 in. FHT x 1/2 in. MIP Brass Adapter Fitting 801779 - The Home Depot