Check the listing for details. 31mm Flange Pump Parts Spectra S1 S2 Breast Pump Replacement Set. Condition: New. Listed at 32.99 USD. Made by IVARONAL,Not original Spectra Pump Parts. 【All Series Flange Size Available】：18 different flange size for your choice：15mm, 16mm,17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm,27mm, 28mm, 29mm, 30mm, 31mm, 32mm.
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