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Polished 316 Stainless Steel, For Axial, Open Flex Wrap-Around Pipe Coupling - 5MTD2|STR36051 - Grainger
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PU PV PE PY PZA PM 304 stainless steel pneumatic quick coupling metal hose trachea water pipe high pressure 4 6 8 10 12 14 16mm - AliExpress
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Smith Cooper Cast 150# Stainless Steel 6 in. Full Coupling Fitting - Threaded - John M. Ellsworth Co. Inc.
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