The 4x Total PC Case Fan Lot includes 2x Prism6Max WH Forward and 2x Ocypus Delta F12 BK ARGB fans. These fans are designed to improve cooling efficiency in computer cases, ensuring that the system stays at optimal temperatures during operation. With the added bonus of customizable RGB lighting on the Ocypus Delta F12 BK ARGB fans, users can personalize their setup while also ensuring adequate airflow for a smooth and efficient computing experience.