Nenesupply Compatible 21mm Flange and Duckbill Valves for Spectra S1 Spectra S2 Breastpump Not Original Spectra Pump Parts Replace Spectra S2 Accessories and Flange Not O

These worked perfectly with my Spectra. It was nice to find these flanges at such a good price that also worked with the pump I was using.

Fit my pump perfectly and was the size I needed.

Tunnel is extra long, longer than even the original Spectra flanges which is so hard to find online. Exactly what I was looking for, I bought multiple. So nice that it's HSA/FSA covered too

They are not EXACTLY like my spectra parts but they come close! They fit on perfectly and work. Only reason I give 4 stars is b/c it is just slightly lower quality. Not enough to effect use though. And nice that it’s so much cheaper

These fit pretty well. No leaking and built great. Love supporting small biz too. For any flange I’d recommend keeping it at a slight angle lower so milk flows right down.