Cooler Master Mobius 120 Ring Blade Fan, Interconnecting Blades, Loop Dynamic Bearing, Anti-Sway System, 2050rpm PWM Control for Computer Case, CPU Liquid and Air Cooler

Ring Blade Design (RBD): Interconnecting fan blades designed for a reinforced and rigid structure, eliminating vibration for stable and fluid fan operation. Loop dynamic bearing: New loop dynamic bearing design utilizes thick oil coating and lubrication to allow for stable performance Oil Reflow: The oil flows back to the sealed bearing to create constant lubrication against friction and increases the life span of the fan. Anti-Sway System: Magnetic ring prevents bearing shaft from tilting, stabilizing the fan to prevent fan blade obstruction under various orientations, as well as oil spray. Pressure Air Acceleration: Angled inner frame rim with chamfered side vents boost airflow draw, maximizing force induced air pressure and diminishing dead air.