SODIAL Nintendo Screwdriver 3.8+4.5mm Repair Tool for NINTENDO SNES N64 NES SEGA NOMAD Yellow Transparent 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 Total Length: Approx. 15.5cm/ 6.10" Aperture: 3.8mm/ 0.15", 4.5mm/ 0.18"