Flange Inserts 13/15/17/19/21mm Compatible with Momcozy S12/S12pro/S9/S9 pro, for TSRETE/Spectra/Medela 24mm Shield/Flanges

Features： Broad compatibility, suitable for traditional breast pump, plug-in breast pump, and wearable electric breast pump. 5 sizes of flange inserts suitable for different breast pumps: 13mm 15mm 17mm, 19mm, and 21mm, ensuring that every mother has fitted shield. Practical for small-nippled mothers to use large breast shields, avoiding nipple trauma or irritation. Made from food grade silica gel, no odor, friendly to mothers' sensitive skin, secure to use. A practical breast pump replacement for breastfeeding, making milk expression more comfortable and efficient. Specifications： Color: White and transparent Material: Silica gel Product Weight: 15g/ 0.52oz Note： The milk pumps showed in the pictures are not included. Package List： Flange Inserts