Replacement Breast Pump Parts Compatible for Spectra S1 S2 9 Plus Breastpumps with Duckbill Valves Tubes Backflow Protector

["Wide Application: The package includes 6 duckbill valves, 2 backflow protectors, 2 silicone tubing, and 2 silicone membranes, compatible with Spectra S2, Spectra S1, Spectra S3, Spectra 9 Plus, M1 breastpumps.","Comfortable & Effective: With backflow protectors, no milk will enter the tubing, so the tubing will remain clean. Not only enhances comfort, but also allows for the efficient expression of breast milk.","Premium Material: Made of food-grade plastic and silicone, soft to the touch, gentle on both moms and babies. Parents can use this with peace of mind.","Easy to Install & Remove: Molded 1:1 to the original device, ensuring complete compatibility. Plug-and-play—convenient and fast.","Simple to Clean & Caring: After each use, you may rinse them under running water, then double-clean them with steam or boiling water."]