New Security Bits. One 3.8 MM and one 4.5 MM Gamebit ( A/K/A - Linehead and/or Security Bit ) Plus one CR 2032 Lithium Battery for use as the Gamesave battery.

These are the tools used to repair video game cartridges, that is, remove the security screws and replace the battery. The bits are for use for video game cartridges such as Genesis, Nintendo 64, Turbo-Grafx, Gamecube and PC-Engine consoles and others requiring this size bit.

Why would you want to take apart a Super Nintendo or other game cartridge?
Because the Gamesave battery in the cartridge has more than likely reached the end of it's shelf life. The batteries were manufactured to be viable for ten years + or -.

Although the battery is not essential to play the game the battery is essential to save the progress in any game session. With an outdated battery you will have to start each session as if starting for the first time.