Interchangeable with Spectra Replacement Pump Parts : The package contains 12 replacement spectra pump parts（2 duckbill valves, 2 backflow protectors, 2 tubings, 2 silicone massage pads and 2 bottles).
Compatible with Spectra S1, Spectra S2, Spectra 9 Plus.
Note:Not Original Spectra pump parts
Durable and Long-lasting : specially customized duckbill valves with sturdy base and an extra handing area.It can be easily disassembled in 2 ways and reduces pulling on the top area.So our part is not easy to deform and the tip is less likely to have big cracks
