Here is a picture of a CF-9 bat I purchased last year. The man I purchased it from said he thought this was a paint crack only.
I went ahead and bought it and even with it my hand, I still can't tell.
My dd used it in a few tournaments but felt it was too small for her (29/18) -11.
She used it in batting practice and in a few games and the crack never changed and the bat has very good pop. Doesn't sound any different from any other CF-9 either.
It is just sitting in the garage and I wan't to sell it, but I don't want to mislead anyone thinking this is a paint crack if it is not.
There are lots of knowledgeable people here and I welcome their opinions.
Is this a surface paint crack or a composite crack?