Posted 1/12/2019 07:54 (#7239237 - in reply to #7239195) Subject: RE: Post Hole Auger Diameter vs Post
I use a 9" for almost everything, I have a 12", thought it would work great for telephone poles for a lot fence (10" to 10 1/2"). But I found that if I bore the hole plumb with the 9", I could push the poles in with my backhoe, no tamping, solid as a rock!