Steel 3.8mm Security Bit Screwdriver Tool (7cm Length) Open Cartridges for Original Nintendo (NES), Super Nintendo (SNES), Nintendo 64 (N64), Virtual Boy, Original Game Boy, Game Boy Color, and Sega Game Gear Fits 1/4" driver. Made from steel. Measure 7 cm (~2.75 inches) in length 3.8mm opens game cartridges for Original Nintendo (NES), Super Nintendo (SNES), Nintendo 64 (N64), Virtual Boy, Original Game Boy, Game Boy Color, and Sega Game Gear. Compatible with Game Boy color games like Pokemon Gold, Silver, Crystal, Blue, Red, and Yellow.