3.8mm & 4.5mm Screwdriver Bit for NES SNES N64 Game Boy Nintendo Security Tool Features: These Screwdrivers Open The Following Game Cartridges:  8-bit NES, 16-bit SNES, N64, GameBoy, Sega Genesis, Sega Master System, And Sega Game Gear These Screwdrivers Open The Following CONSOLES:  Top Loading 8-bit NES, 16-bit SNES, Original Mini SNES (snes-101), Nintendo 64, And Gamecube With this tool set you can easily open and clean / repair your old game cartridges and game consoles. Both of The Gamebit Security Screwdrivers Are Magnetized, Which Makes Screw Removal And Installation Super Easy. Unlike Most of the Other Cheaper Gamebit Screwdrivers, These Ones Are Very Durable - They Are Made Out Of Super High Quality Steel! These game bit screw drivers are precision made (this is a professional quality tool set.) They have a VERY tight grip, which means that they will not slip, and they will not strip out the screws. They are also fully magnetized, and they hold the screws firmly in place. Compatible with: For Original Nintendo (NES) Super Nintendo (SNES) Nintendo 64 (N64) Original Game Boy Game Boy Color Virtual Boy Sega Game Gear Sega Genesis Sega 32x Compatible with Consoles: Super Nintendo (SNES) Nintendo 64 (N64) Gamecube Virtual Boy Sega Game Gear TurboGrafx 16 TurboDuo Package included: 2 x screwdrivers