Steel Set of 3.8mm & 4.5mm Screwdriver Security Game Bits for Nintendo NES, SNES, N64, GameBoy, and GameCube Made from steel Measures 5 cm (2 inches) in length 3.8mm GameBit opens game cartridges for the NES, SNES, N64, Virtual Boy, Game Boy, and the GameGear 4.5mm GameBit opens the Super Nintendo, Nintendo 64, GameCube, Virtual Boy and other consoles