The PH-F120SP, 120mm Premium fans from Phanteks is designed with the unique Maelström concept technology. They are specifically designed to overcome high static pressure, blade deflection,and noise challenges. Affordable and durable, the PH-F120SP is a great choice for case/radiator fan upgrades. The UFB Bearing composed by MOSS and SSC Systems creates a longer lifespan and adds stability to the fans. Silence and durability are now possible and a standard with the new PH-F120SP.