I thought I had every freewheel remover known to man.
I'm fixing up a c. 1970 Schwinn which has a no-name freewheel. After removing the ball bearings I was faced with (see photo).
Those notches are 4 mm long and about 2 mm deep.
None of my freewheel removers fit this.
Click on the thumbnailsfor a hi-res image.
freewheel removers 002.jpg