Scars, these foreshafts aren't meant for the arrow here. Just a an example of foreshafted points.
The foreshafts would be fitted into the end of the shaft with a tapered hole matched to accept the foreshaft. Both cane and hardwood shafting was used with foreshafts.
Foreshafts are not necessary for adding stone points to arrows. I haft a point right to the shaft, cane or hardwood shoot arrows.