Wiper blades

Got my OER/CLASSIC K164R blade refills today perfect fit. I even figured out how to seperate the one end of the wiper blade.

Only think I couldn't figure was the plastic bump thing on the wiper. Screenshot_20200424-195638.png

Easily removable but don't see a purpose.

The metal was a tad wider then the last insert. But it fit much better.

Can't wait to push the sprayer button.