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Multiple sizes)Copper Fittings Return Bend For Refrigeration &Air Con | eBay
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Infinitech 3/8 & 3/4 Hvac - R Copper Line Set Fittings Kit Includes long sweep elbow coupling street elbows Perfect for air conditioning lineset refrigeration liquid suction lines tubing pipes 3438 - Amazon.com
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Red Copper Vertical Connection Bulk Copper Pipe Fittings Refrigeration Copper Pipe Bundle Connection Suitable for Welding - AliExpress