Madela pump question

TomsShugShug

What is the piece of the pump called that houses the membrane and the horn connects to and the bottle screws on the bottom? I'm looking into buying another set, but I don't know what it's called. 

utlawgirl

I think what you're looking for are the connectors:

https://www.medelabreastfeedingus.com/products/pump-accessories/195/personalfit-connectors-2pack 

TomsShugShug

Those are exactly what I was looking for! Thank you!