The Thermaltake Pure Duo 14 ARGB Sync Radiator Fan (2 - Fan Pack) is designed for optimal cooling performance with a maximum airflow of 615.1 gallons per minute and a fan speed of up to 1500 RPM. Each fan features a 5.51" diameter and is equipped with a hydraulic bearing for enhanced durability and quiet operation. The dual independent ARGB LED rings, with 9 addressable LEDs each, provide stunning illumination and can be synchronized with 5V RGB capable motherboards. This fan pack is perfect for enhancing the aesthetics and cooling efficiency of your PC build, whether used in a case, radiator, or mounted on a motherboard.