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1-1/2 in Merchant Steel Coupling, Sch. 40 Galvanized Pipe Fitting, Class 150 - GP130112 - Hi-Line Inc.
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Amazon.com: Carvedexquisitely Stainless Steel Coupling, 304 Stainless Steel Cast Pipe Fittings,1" x 1" NPT Female Thread (Pack of 2) : Industrial & Scientific
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Stainless Steel 304 Cast Pipe Fitting, Coupling, Class 150, 1/2" NPT Female: Industrial Pipe Fittings: Amazon.com: Industrial & Scientific
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MetalTech 10.5 in. x 1.75 in. Galvanized Steel Coupling Pin Connector, Scaffold Tool for Connecting Metaltech Scaffolding M-MLC1S - The Home Depot
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