-New 3rd Generation from Maymom. Duckbills for Spectra S1 S2 pumps. Go around the hole type. Contains 4 duckbill valves for Spectra. Work with Spectra S2, Spectra S1, Spectra 9 Plus, Spectra Dew 350, Spectra S2Plus, Spectra S1Plus-Made by Maymom. Not..
- Duckbill- Duckbills for Spectra S1 S2 pumps. Go around the hole type. Contains 6 duckbill valves for Spectra. Work with Spectra S2, Spectra S1, Spectra 9 Plus, Spectra Dew 350, Spectra S2Plus, Spectra S1Plus- Made by Maymom. Not original Spectra pu..