16mm Flange Insert Compatible with Momcozy S9 S10 S12 Pro, bluefair BIOBOO, S21, Bellababy, NCVI, kmaier, TSRETE, MomMed, NaNaLazy, NIRGU, Onlyeah, MomWills, Medela, Spectra 24mm Breast Pump

This product has a variety of models, which can change the size of the "breast milk channel" on the cover of the breast pump, so as to be suitable for mothers with different nipple sizes, help to improve the breast feeding efficiency and increase the pumping capacity, and make mothers more comfortable in the process of breast feeding. • Durceler 2 Piece 16mm flange inserts to compatible with Momcozy S9 S10 S12 Pro / bluefair / BIOBOO / S18 S21 S23 Wearable Breast Pump / Medela / Spectra S1 S2 / TSRETE / FEISIKE / Rainyb / Bellababy MiniO / NCVI / kmaier / MomMed / NaNaLazy / NIRGU / Onlyeah / MomWills / Motif Luna / Amada MYA 24mm breast shields. It will reduce the 24mm shield nipple tunnel down to 16mm. Also compatible with Lansinoh / Freemie 25mm cups to reduce it down to 16mm. • Seamless Compatibility For Optimal Milk Expression: Suitable for nipple diameter 14-15mm(after a pumping session), or measure the circumference of nipple base about 37.68 - 40.82mm before a pumping session. • Great solution for small-nippled mothers using large breast shields, Proper nipple tunnel fit is essential for comfort and efficient milk output. It can be compatible with Spectra and Medela (Freestyle, Harmony, Sonata, and Swing-Maxi pumps) and other brands. • REPLACEMENT GUIDANCE – Replace every 4-12 weeks, depending on duration and frequency of each pumping session. Durable, clear, and comfortable. BPA free, made of silicone material. • Maintain compatibility with most handsfree bra. You can use most handsfree bra cups with they original 24/25mm detachable shields having this insert inside. During operation, you need to squeeze slightly to make the Insert fully fit with the shield to achieve the perfect effect.