tools for opening those vintage game console and game cartridges. 3.8mm & 4.5mm Screwdriver Used for dismantle. Used for dismantle for for N64 s host machine, also can dismantle for power, for Power. Ergonomic design, the feeling of use of the grip is improved , more comfortable. Allows for opening and internal cleaning of games as well as battery replacement., Manufacturer: Hattba