/diy/ - Do It Yourself

Hey /diy/, my sink's been broken for ages and I finally found the culprit, this bit here which is supposed to control the waterflow.

Hardware store wants to charge me 60 for new ones, but if I can get the name of the part I might be able to see if the manufacturer offers it cheaper through some searching.

I've checked extensively, the manufacturer has no label anywhere on the sink set.