Sell Maymom flange insert 17mm best price

Maymom inserts to reduce Freemie 25 or 28 mm cups down to 17 mm Spectra pumps with Backflow preventor screw type – what to purchase – pair white tubing connector, pair short tube Spectra pumps with Backflow preventor lid type – what to purchase – pair white tubing connector, pair short tube Spectra pumps with Backflow preventor filter – what to purchase – no need to purchase spare parts to connect with maymom Unimom pumps – what to purchase – pair white tubing connector, pair short tube and backflow screw type.