compatible with Medela older pump (old pump in style, freestyle, swing) for newer pumps (flex, pis with maxflow), look up ASIN B07MY18RVZ This product will enable the above flanges to be compatible with Avent bottle, spectra bottles etc Includes 4 conversion rings plus 4 sealing o-rings to avoid many leaking events BPA free, dishwasher safe, retail pack, sealed by manufacturer You can pump directly into Avent bottles Also Adapts to: Evenflo comfort Select, Ameda Purely Yours, Lansinoh Double Electric, Playtex Embrace, Dr Browns Natural Flow ElectricManual
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Item# : SPM10208673202
Model # : M017-Rx4