I got the 9247 too. It's 14 1/4 between centers. It works great!
I've been batching it for two days and have been turning plugs like a mad man!
I sent a msg to them complaining that their catalog and web descriptions state that the spindle is bored to 3/8-inch, and it's not. They said it was a mistake; that it's actually bored, but not all the way through! Duuhh!