Bullet Points : 1 > Contents - 2Ct Small 21Mm Flanges And 2Ct Duck Beak Valves For Spectra S2, Spectra S1 And Spectra S1Plus Breast Pump Made By Maymom. Not Original Spectra Flanges, Spectra Duckbill Valve. Can Use The Maymom Flange For Spectra S2 Pump Parts Or The Maymom Valve For Spectra Valve Change. Made By Maymom, Not By The Original Spectra Company Maymom Is Not Affiliated With Uzinmedicar, The Trademark Owner Of Spectra 2 > Maymom Flange Can Be Used With Spectra Wide Neck Bottles (Wide-Neck Bottles), Avant Bottles And Maymom Wide-Neck Bottles. Available Flange Sizes 13Mm, 15Mm, 17Mm, 19Mm, 21Mm, 24Mm, 25Mm, 27Mm, 28Mm, 29Mm, 30Mm, 32Mm 3 > Maymom Duckbill Valves Offers Easy Retractable Features As Well As Lasting Quality And Colour Options 4 > International Products Have Separate Terms, Are Sold From Abroad And May Differ From Local Products, Including Fit, Age Ratings, And Language Of Product, Labeling Or Instructions Description : Contents: 2 Flanges And 2 Duck Beaks. Manufactured By Maymom, Not By Original Spectra Company Maymom Is Not Affiliated With Uzinmedicare, The Trademark Owner Of Spectra