Maymom 21mm Flange Pump Parts Compatible with Spectra S2 Spectra S1 Spectra 9 Plus Breastpump Not Original Spectra Pump Parts Replacement to Spectra S1 Plus Accessories, Spectra Small Flange

"Product Content: 21mm Flange (x2 Small Flange), Backflow Protector(x2), Tube(x2), Duckbill Valve (x2), Bottle with a Two-Piece Travel Cap (x2). All Products compatible with Spectra 9+, Spectra S1, Spectra S2 Breastpump. This kit does NOT include Dome Caps and .
"Maymom-made products. Not Original Spectra S1 Accessories. Not Original Spectra S2 Accessories. Not Original Spectra Pump Parts. All pump parts made by Maymom LLC.
"Maymom pump parts perform as well as OEM parts. Interchangeable and compatible with Spectra pump parts. Ideal Spectra replacement for Spectra Duckbill Valve (Spectra Valve), Spectra Backflow Protector, Spectra flange, Spectra Tubing, Wide-Neck Spectra Bottle. Maymom flange size available: 15mm, 17mm, 19mm, 21mm, 24mm, 25mm, 27mm, 28mm, 30mm, 32mm.
"The two-piece cap of Maymom bottle features rewritable surface top for labeling date or baby's name for daycare or daily storage use. Write with regular ball pen or dry erase marker. Erase with soapy water.
"Comply with FDA regulations for plastic materials that contact food. Material does NOT contain BPA. Can be sanitized with, boiling water, water steam or microwave-steam bags.