Photo 1 of Maymom Pump Parts for Spectra S2 Spectra S1, 21mm Flange, Valve Tube Bottle Backflow Protector, Not Original Spectra S2 Accessories Replace Spectra Duckbill Valve Spectra Bottle Spectra (21mm Flange)

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Photo 1 of Maymom Pump Parts for Spectra S2 Spectra S1, 21mm Flange, Valve Tube Bottle Backflow Protector, Not Original Spectra S2 Accessories Replace Spectra Duckbill Valve Spectra Bottle Spectra (21mm Flange)Photo 2 of Maymom Pump Parts for Spectra S2 Spectra S1, 21mm Flange, Valve Tube Bottle Backflow Protector, Not Original Spectra S2 Accessories Replace Spectra Duckbill Valve Spectra Bottle Spectra (21mm Flange)Photo 3 of Maymom Pump Parts for Spectra S2 Spectra S1, 21mm Flange, Valve Tube Bottle Backflow Protector, Not Original Spectra S2 Accessories Replace Spectra Duckbill Valve Spectra Bottle Spectra (21mm Flange)