6 Nenesupply Duckbill Valves For Medela And Spectra.
Compatible Pumps: Medela Pump In Style, Medela Swing, Medela Harmony, Medela Symphony, Medela Mini Electric And Spectra S1, Spectra S2, Spectra 9 Plus, Spectra Dew 350 Breastpumps.
Does Not Contain Any Bpa, And Sterilize In Water Steam Or Boiling Water