what size?

I just got a new red tail boa. When asking the breeder what he is feeding her he said large pinkie rats but she will be able to move up fuzzies anytime now. I did feed her a fuzzie but I feel as if it was a little big for her. So what I am wondering is what size mice would equal out to a large pinkie rat?

A mouse hopper should be about right.

well that should make it easier. I already have a snake that eats hoppers! Thank you!