Maymom Wide Neck Base Connector for Spectra is a connector for Maymom MyFit Breast Shields and Spectra pumps . This connector also fits Medela PersonalFit Breast Shields and the new Medela Flex Shields! Maymom two-part connector and shield system allows you to customise between different flange nipple sizes while using just this one Maymom connector. Compatible Shields: Maymom MyFit Breast Shields (click here), Medela PersonalFit Breast Shields (click here),Medela PersonalFit Flex Breast Shields (click here) Compatible Pumps: S1, S2, M1, Spectra 9, Dual Compact, Synergy Gold S and S1 Pro Only for wide neck bottles (e.g. PhilipsAvent PP & Glass bottles, Spectra bottles, Maymom bottles) Can be used with Spectra valve and Maymom for Spectra valve Easy to clean -all components are steam safe for sterilization US FDA registered medical device (No. D192499); Products are inspected by US FDA. Complies with US FDA and EUstandards for containers that contact food and class II medical device Retail poly-bag packed; sealed by the manufacturer Product by Maymom, non-original Spectra parts Made of Bisphenol-A (BPA)/DEHP-free material Includes: 2x Connector ONLY