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Anderson Metals 56103-08 Brass Pipe Fitting, Coupling, 1/2" x 1/2" Female Pipe: Industrial Pipe Fittings: Amazon.com: Industrial & Scientific
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Proline Series 1/2-in x 1/2-in Compression x Mip Adapter Coupling Fitting in the Brass Fittings department at Lowes.com
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Amazon.com: Brass Coupling Brass Pipe Fitting Brass Reducer Coupling 1/2" inch Female x 3/4" inch Female : Industrial & Scientific
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LTWFITTING 3/4 in. FIP x 1/2 in. FIP Brass Pipe Reducing Coupling Fitting (5-Pack) HF98R12805 - The Home Depot
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