I've been using a Hay Chix "Micro Mini" horse with a 1-1/4 inch hole since last September--one for my 14 hand horse and one for Eddy (approx 37"), my mini (/pony?!!). I decided I wanted to get a 2nd one for Eddy. They have replaced or renamed it the "quarter bale feeder" and besides the 1-1/4 size I see they have a 1" "slow feed extreme" for $10 more. Eddy does seem to get through his hay fairly fast in the 1-1/4" but he also tends to be on the thin side. I might call Hay Chix for advice tomorrow but thought I'd check to see what anyone else is using for hole size. Would 1" be way too small? Thanks!!