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Amazon.com : [6-Count] Papablic Duckbill Valves for Spectra and Medela, Replaceable Duckbill Valves for Spectra S1 Spectra S2 valves and Medela Pump in Style, BPA/DEHP Free White : Baby
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Amazon.com : Maymom Flange Adapter Compatible with Spectra S1, Spectra S2, Compatible with Most Medela Breastshield and Bottles; Connects Between Maymom/Medela Breastshield and Spectra Backflow Protector : Baby
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