(6mm Hexagonal fitting into standard screwdriver. Happy hunting :).

Type: Screwdriver
Region Code: Region Free
Compatible Model: For Nintendo 64, For Nintendo Game Boy, For Nintendo NES, For Nintendo SNES
Rating: E-Everyone
Publisher: Nintendo
Compatible Product: Console, Controller, Handheld Console
Brand: Unbranded
Platform: Nintendo Game Boy, Nintendo Game Boy Advance, Nintendo Game Boy Color