View 2 of 8PCS Flange Inserts 19mm/21mm,Compatible with Momcozy S12 Pro/M5/S9 Pro Hands-Free Breast Pump,Use for Medela/Spectra/Elvie/Willow/TSRETE/kmaier 24mm Shields/Flanges,Reduce 24mm to Other Size,4pc/size 19/21mm-4pc/each

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View 1 of 8PCS Flange Inserts 19mm/21mm,Compatible with Momcozy S12 Pro/M5/S9 Pro Hands-Free Breast Pump,Use for Medela/Spectra/Elvie/Willow/TSRETE/kmaier 24mm Shields/Flanges,Reduce 24mm to Other Size,4pc/size 19/21mm-4pc/eachView 2 of 8PCS Flange Inserts 19mm/21mm,Compatible with Momcozy S12 Pro/M5/S9 Pro Hands-Free Breast Pump,Use for Medela/Spectra/Elvie/Willow/TSRETE/kmaier 24mm Shields/Flanges,Reduce 24mm to Other Size,4pc/size 19/21mm-4pc/each