Description :

3.8mm/4.5mm Screwdrivers Bit Open for Nintendo SNES N64 NES SEGA NGC

Features :

Extra large handle for ease of use， much easier to use than bits.
Allows for opening and internal cleaning of games as well as battery replacement.
Used for dismantle NGC/SFC/N64/SEGA's host machine， also can dismantle WII power， NGC Power.

Compatibility :
Original Nintendo (NES) game cartridges
Super Nintendo (SNES) game cartridges
Nintendo 64 (N64) game cartridges
Virtual Boy game cartridges
Original Game Boy game cartridges
Game Boy Color game cartridges
Sega Game Gear game cartridges

Total Length : Approx. 15.5cm/ 6.10"
Aperture : 3.8mm/ 0.15"， 4.5mm/ 0.18"
 

Package includes :  

1 x Screwdriver For Nintendo
3.8mm/4.5mm for option:)
 

Details pictures :  

4.5MM :

3.8MM :