Steel 3.8mm Screwdriver Security Bit Open NES SNES Nintendo 64 & Game Boy Games
Made from strong heat treated, hardened steel.  Comes in black version or silver colored versions.  Silver colored versions are nickel plated, and are made from heat treated, hardened steel.  Thus, the silver version is of the 3.8mm security bit is much stronger than the black version. The bit measures 5 cm (about 2 inches) in length.  Bit will fit any standard 1/4" screwdriver handle.The 3.8mm security bit allows you to open Original Nintendo (NES) games, Super Nintendo (SNES) games, Nintendo 64 (N64) games, Virtual Boy games, Original Game Boy games, Game Boy Color games, and Sega Game Gear games.  Opening those games will allow you a greater ability to clean games to restore functionality.  Additionally, it'll allow you, when necessary, to access a game's battery in order to restore save game functionality.