Quote Originally Posted by dnkykng89 View Post
I know this thread is from forever ago, but if it's of any use to anyone, a tri wing bit is useful for getting carts open to anyone uneasy of damaging screws, like the one here: http://www.projectgameboy.com/index....=index&cPath=4
The tri-wing driver is used for opening the Game Boy itself. The 3.8mm security game bit is what you're after (found within your same link). I'm sure that's what you were thinking of, but I didn't want to see anyone order the wrong thing (though everyone that wants to tinker with GB stuff -- or various other Nintendo products -- should rightly have both).