Description [3.8mm Gamebit Screwdriver] : Compatible With Game Cartridges For Nintendo (NES), Super Nintendo (SNES), Nintendo 64 (N64), Virtual Boy, Original Game Boy, Game Boy Color, And Sega Game Gear. [4.5mm Gamebit Screwdriver] : Compatible With Sega Master System, Sega System, Sega 32x System Game Cartridge; Game Cube, Virtual Boy, Game Gear, Turbografx 16, Turboduo Console.