jimowang 6pc flange inserts 17/19/21mm for momcozy s9 pro hands free breast pump,compatible with s9/s10/s12 wearable breast pump.suitable for medela,spectra shields/flanges,reduce 24mm to correct size,2pc/each 17/19/21mm-2pcs/each is up for auction in Baby Products. This item is in Good Condition. This auction has ended — similar items appear in live auctions regularly.