Ultra-silent Fan, with new high-technology Tacens Fluxus II Bearing. Dust proof design provides long life and high resistance. Its aerodynamic blades, anti-vibration screws and cable sleeving makes the AURA II a high quality product. Include Antivibration screws. New High-Technology Tacens Fluxus II Bearing.-Ultra Silent. Lower noise than other bearings.-Long life: Over 60.000hrs.-Heavy duty operation. The fan works perfectly in extreme hot conditions.-Dust proof design. Closed bearing design prevent the dust and foreign bodyimproving silence and lifetime.Airflow & Pressure Optimized blades design.Aerodinamically designed by expert engineers for best results.High-End Pro Extras.-Professional High-Quality antivibration screws avoid all noise produced by undesired vibrations.-High quality black cable sleeving full cable protection and better looking.