This is a modification of this part:

https://www.thingiverse.com/thing:1428533

I found the end with the teeth on it to be excellent, but the hinge pin ended up too small in diameter for my Kenmore washing machine. I enlarged the pin and neck, and lengthened the cutout on top.

The design intent is for the cheap and simple dogs to wear instead of the toothed inner ring of the agitator, so I printed them in TPU because it's softer than the agitator plastic.