I would guess 6in - 7in
I would agree it is probably 3 - 4 inches for a 13 year old.
I'm an adult and Im 7 1/2 and that is a little bit more than average
6-7in for A 13 year old!!! Thats crap.I think between 3-4inchesIs 6 inches long too small for a 13-year-old?