Maymom Widemouth Flange Compatible with Spectra S1 S2 Pump, 19 mm, 1pc

Maymom flange, 19 mm, one uint ONLY, for single-sided pumping. For double-sided pumping, please buy two units.
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.
Made by Maymom, not original spectra company. Maymom is not affiliated with Uzinmedicare, the trademark owner of spectra.