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Amazon.com: [50-Pack] PROCURU 1/2-Inch Nominal Copper Pipe Coupling with Tube Stop CxC, (1/2", 50-Pack) : Tools & Home Improvement
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Legend Valve - 1/2″ Pipe, 3/4″ Copper Tube, Brass Compression Pipe Coupling - 36899185 - MSC Industrial Supply
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PROCURU 10-Pack 1/2-Inch Copper Coupling with Stop, C x C Sweat Connection, Certified Safe (CWCR0012-10P) - Amazon.com
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