NOTE: when you buy 3.8mm or 4.5mm bits, please also buy the adapter if you haven't it.

Special Repair Screwdriver Nintendo Game Console Repair Screwdriver for N64/SFC/GB/NES/NGC/WII/SS/SEGA/Virtual Boy/Turboduo 3.8-4.5mm Cartridge Screwdriver

These two specifications of screwdrivers are powerful tools for removing most game cards, memory cards, and power supplies.

Suitable for disassembling NGC/SFC/N64/SEGA gaming consoles, N64/SFC/GB/NES/NGC gaming cards, N64 memory cards, original WII power supplies, NGC power supplies, SS Saturn original acceleration card memory cards (partially assembled can also be used)

Also could refer the below pictures: