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Amazon.com: Quickun 304 Stainless Steel Pipe Coupling Fitting, 1/2" x 1/2" Female Pipe Coupler Connector Adapter Fitting (1" Length) : Industrial & Scientific
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Horiznext npt 1/2 (means the inner diameter of the thread is 3/4 inch) cast female taper threaded pipe coupling, stainless steel 304 coupler for mush tun cooler and shower hose, 2 pcs - Amazon.com
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Orbit Barbed x 1/2-in FNPT Flex Pipe Coupling in the Flex Pipe Fittings & Risers department at Lowes.com
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Amazon.com: Quickun 304 Stainless Steel Pipe Coupling Fitting, 1/2" x 1/2" Female Pipe Coupler Connector Adapter Fitting (1" Length) : Industrial & Scientific
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Spears 429 Series PVC Pipe Fitting, Coupling, Schedule 40, White, 2" Socket: Industrial Pipe Fittings: Amazon.com: Industrial & Scientific
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