The unbreakable rule has now been broken. Cooler Masters Turbine Master is the companys 120 mm high air flow fan that refutes the standard of "high air flow fan = loud". Modeled after a strong turbine engine, the Turbine Master produces a strong air flow from an ingenious 16-blade design & generates unsurpassed airflow combined with a circular semi-frameless design to maximize coverage & reduce noise. The Barometric Ball Bearing (BBB) can be easily removed to provide effortless cleaning & quick maintenance.