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 Included: 1x 3.8mm Screwdriver For Nintendo 1x 4.5mm Screwdriver For Nintendo