SET of Steel 3.8mm 4.5mm Screwdriver Security Bits Open Nintendo NES SNES N64 Games 2 Versions: Black or Silver in Color Black version is made of tempered steel. Silver version is nickel plated for corrosion resistance and is made of stronger heat treated, hardened steel. 3.8mm opens games for Original Nintendo (NES), Super Nintendo (SNES), Nintendo 64 (N64), Virtual Boy, Original Game Boy, Game Boy Color, and Sega Game Gear. 4.5mm bit opens games for Sega Genesis, Sega Master System, and Sega 32X. 4.5mm bit opens systems for Super Nintendo, Nintendo 64, Game Cube, Virtual Boy, Game Gear, TurboGrafx 16, and TurboDuo. Generous 5 cm in length