3D printed product using 4090 fan, the first PWM thin fan with reverse rotation and front exhaust ^^ 18MM thickness can bring up to 97.5CFM air volume, reverse rotation can quickly extract heat from the chassis and radiator ^^ With FDB bearings, the service life is longer and can bring higher speed, maximum 3300RPM ^^ Integrated fan blade design, with seven blades connected together to ensure better dynamic balance ^^ Includes two specifications of screws, which can be used for liquid cooler screws or Case