Hi Jim,the Hegar dilators are long because they are two sided, ex. one instrument is say a 15 and 16. One end is slightly larger. So only half is used. I'm going by what a surgeon told the normal size anus is. I'm going to assume he knews what he was talking about. Cervical dilators are larger than the Hegars also. They wouldn't be used for that. Lol Glad you're enjoying the group. A lot of knowledge here. That's for sure. It is a comfort to know you aren't alone.
Aimee