Features: Prevent breastfeeding milk backflow with this efficient duckbill valves or membrane for electric breast pump.<br>Easy to install and clean, suitable for breast pump model.<br>Designed for breastfeeding moms, a must have for those using .<br>Whether at home or work, the membrane is essential accessories for easy pumping, enjoy uninterrupted milk expression.<br>Enhances your breastfeeding journey with this essential pumping part that ensures smooth and continuous session.<br><br>Specifications: Component: Silicone<br>Type: 6pcs duckbill valves & 4pcs diaphragm set, 6pcs diaphragms, 4pcs diaphragms, 8pcs duckbill valves, 4pcs duckbill valves, 1pc diaphragm, 1pc duckbill valves(optional)<br>Valves: about 23x12mm/0.9x0.47"<br>Diaphragm: about 43mm/1.69inch<br><br>Package Includes: 1pc or 1 Set Breast Pump Diaphragm or Duckbill Valves(optional)<br><br>note: Please allow 1-2cm errors due to manual measurement. <br>Please allow for slight color differences due to different display resolution.<br>