Calling all pumping moms! This replacement parts set for Spectra breast pumps has everything you need to keep your pump running smoothly. The 12-piece kit includes 6 duckbill valves, 2 backflow protectors, 2 silicone tubing pieces, and 2 silicone membranes - basically all the parts that wear out over time. These are compatible with Spectra S1, S2, S3, 9 Plus, and M1 breast pumps, though they're not original Spectra brand parts. The closed system design is crucial - it means there's no contact between your milk and the pump tubing, which protects your pump motor from damage and keeps everything hygienic. Cleaning is straightforward: just use soapy water and rinse with clean water (no dishwashers or hard brushes, please). The thin tips of the duckbill valves can be cleaned with your fingers for thorough sanitation. All items come in retail packaging sealed by the manufacturer for best protection. Having fresh replacement parts on hand is essential for maintaining suction power and efficiency in your breast pump. Worn-out valves and membranes can significantly reduce performance, making pumping sessions longer and less effective. This affordable set lets you replace all the key components at once, ensuring your pump works like new. Whether you're stocking up or dealing with decreased suction, this parts kit delivers the quality you need to keep your pumping journey smooth and efficient. Your pump (and your sanity) will thank you!