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Plumb Pak PP55-4W Sink Drain Coupling, 1-1/2 in, Slip Joint, Polypropylene, White With 1-1/2 x 1-1/4 in reducing washers. The straight extension coupling is used to join two tubes at the same angle The nuts tighten with simple hand pressure 1-1/2 x 1-1/4 in reducing washer
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