I think baseball bats are 2 5/8" at the business end so that thing is 8 1/4" inches (21 cm) around.

Quite a few girls do fisting, sometimes with big fists. I doubt she's the only one that can hide the end of a bat in more than one hole...
_________________________
"If they can't picture me with a knife, forcing them to strip in an alley, I don't want any part of it. It's humiliating." - windsock