It is hard to tell from the photo, particularly as there is no scale.
They sure don't look like projectile weapons, and unless they are much bigger than they appear I don't see how they could be used on an ax.
I guess they must be very primitive tools and bigger than they appear.
Its really hard to analyze stone tools from a picture with no scale!
Those tools look really crude by paleolithic standards.
Acheulian, I’d say.