Maymom flange, not spectra flange or spectra USA product. It will not fit every mother. See below for details. Contains 2x 19mm widemouth flanges for spectra s1 plus pump, s2 plus pump, 9 plus pump and Motiff Luna, Ameda Mya pumps. Suitable for mother with a niple diameter 17-18mm (measured AFTER a pumping session). Suitable for spectra s2 accessory replacement and your alternative to spectra pump parts. BPA free; Complies with US FDA regulation for plastics that contact foods Works with spectra wide mouth bottles, AVENT bottles, and Maymom wide mouth bottles. They are NOT compatible with OTHER wide mouth bottles.
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