I am buying a new tune-o-matic bridge for my Dean Vendetta 1, but I do not know why size the post holes are on the bridge. How can I find out?

Also any recommended bridge to purchase?
Quote by duncang
They probably think about it just as much, they just don't admit it.

Having sexual thoughts is like farting, we all do it, it's just that girls never let anyone else know about it.