Content: Expertly Designed 24mm Flanges/Breastshields*2, Duckbil Valves*2, Backflow Protectors*2, Pumping Tubes*2. Made by Pumpmom, Not original Spectra Pump Parts. Compatibility: Compatible with Spectra S1 Spectra S2 Spectra 9 Plus Breastpumps. This set is made up of a detachable flange and Soft rim Breastshield. PumpMom innovative design is superior to the traditional one piece design. Easy to detach, attach and clean. Improve breast suction efficiency: PumpMom flex shield uses upgraded 106° wide angle opening, oval shape Shields create better fit during pumping. Material safety: Made with Food Grade Polypropylene(PP), BPA and DEHP Free. Sealed by the manufacturer.