Bits Are Made out of INDUSTRIAL GRADE Hardened SteelSuper Tight Precision Fit - Wont Strip Screws1/4" Hex Shaped Body Fits Into Common1/4" Hex Screwdrivers And Electric ScrewdriversOpens 8-bit NES Game CartridgesOpens 16-bit SNES Game CartridgesOpens N64 Game CartridgesOpens GameBoy and GameBoy Color Game CartridgesOpens Sega Genesis Game CartridgesOpens Sega Master System Game CartridgesOpens Sega Game Gear Game CartridgesOpens SNES Game CONSOLESOpens N64 Game CONSOLESOpens Gamecube CONSOLES