What Gamebit size do I need to open a Rumble Pak?

[N64er]

Hi, I'm considering doing the battery-free Rumble Pak mod as shown here: http://www.youtube.com/watch?v=yEn6LT4DUNA" onclick="window.open(this.href);return false; (Unless someone here has done it before and experienced any issues with it, or wouldn't recommend it...)

Anyway, I was wondering what sized GameBit I need in order to open the Rumble Pak up? Does it use the same sized screws as Game Paks (3.8mm) or does it used N64 system-sized screws (4.5mm)?

[marshallh]

All Nintendo systems use 4.5mm

Nintendo accessories use 3.8mm