Champion Sports Plastic Baseball - One Dozen (12)

What is the real diameter of the balls? Page describes them as 9in diameter. Hoping thats a typo.

Are these really 9 inch diameter? That's like a soccer ball size.

How come the main says a diam of 9" if it is really ~3" (somebody confuse circumference and diam.)? 9" is way too big; I almost skipped it.

I want to use these to put pipe cleaners through the little holes. Are the holes the right size for a pipe cleaner to stay in them and not fall out?