I beleive it was "cmbb" that was looking for that bit. Here is the quote of the post he made.
"Gentlemen; Have a 30 year old auger, no not the single handle, It has the butterfly handle.
I have sharpened the auger bit numerous times, no replaceable teeth on this bit. It is 8"
Is there a place to purchase just the auger bit? If so what auger do you recommend?"