Only Medela offers authentic replacement parts designed and tested to work specifically with your Freestyle Flex and Pump In Style with MaxFlow breast pumps. The Medela PersonalFit Flex connectors can be used as a convenient spare or replacement for worn or damaged connectors. As an authentic Medela spare part, our connectors are made with the quality materials and workmanship that moms expect from our brand. Inauthentic or counterfeit parts can vary greatly in terms of quality, materials used, and overall workmanship, all of which may adversely affect the performance of your breast pump. Includes: (2) connectors. IQVIA ProVoice Survey, September 2018-August 2019. Medela 2018 U.S. Breast Milk Feeding Report. Medela 2017 Managed Markets Pulse Study.