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Stainless Steel 304 Cast Pipe Fitting, Half Coupling, Class 150, 1/4" NPT Female X Plain: Industrial Pipe Fittings: Amazon.com: Tools & Home Improvement
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Amazon.com: Carbon Steel A105 Forged Pipe Half Coupling 1" NPT Female x 1" Weld On Pipe Tube Bung Fitting 3000 psi : Industrial & Scientific
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Merit Brass - Pipe Half Coupling: 1″ Fitting, 316 Stainless Steel - 36901627 - MSC Industrial Supply
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