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Proline Series 1/2-in x 3/8-in Threaded Coupling Fitting in the Brass Fittings department at Lowes.com
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Merit Brass - Brass Pipe Reducing Coupling: 3/4 x 3/8″ Fitting, Threaded, FNPT x FNPT, Class 125 - 02204196 - MSC Industrial Supply
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Everbilt Part # 858003 - Everbilt 1/4 In. X 1/8 In. Brass Coupling (10-Pack) - Brass Fittings - Home Depot Pro
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