These are 4x6 index card size. You can download them here.
I have more that I made, but I have to check the licensing agreements since I used elements that other people have made. I think maybe since I'm wouldn't be selling them, as long as I give credit to the person that made the elements I used it would be ok, but I'll let you know what I find out.
I usually print my recipe cards on the back side of an index card. That way if the recipe doesn't all fit on the printed side I have the lines on the other side of the index card to write on.
I use 4x6 because that's what fits in my recipe box, but if you need them in a different size I'll be happy to whip some of those up to. Just let me know.
I hope you enjoy!