Replacement parts for the pump include 4 duckbill valves.

【Specific Compatibility】: These duckbill valves are compatible with the Elvie Stride breast pump, but not with Elvie dual/single breast pumps or original wearable breast pumps. They are also compatible with Momcozy/TSRETE wearable breast cups/Spectra CaraCup. 【Seamless, Same Suction as Original】: The duckbill valve tip is seamless, providing the same suction power as the original breast pump component. The silicone duckbill valve is designed to prevent backflow of breast milk, helping it flow to the bottom of the container without reducing suction power. 【Premium Materials】: These replacement breast pump components are made of food-grade silicone, durable, leak-proof, BPA-free, soft, odorless, and skin-friendly, protecting both mother and baby. 【Easy to Clean】: After each use, wash the duckbill valve and diaphragm of the Momcozy M5 with warm soapy water and rinse thoroughly. Alternatively, heat with boiling water/steam at a temperature not exceeding 100℃ (212℉) for 5-10 minutes. Hard-bristled brushes are not recommended; please clean with your fingertips. Color: Green Material: Silicone Package Contents: 4 duckbill valves This package only includes the above contents; other products are not included. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual product. Measurement tolerance is +/- 1-3 cm.