Dynatron Top Motor DF127015BU-PWMG 12V DC 2 Ball Bearing 6000 RPM CPU Cooling Fan 70mm x 15mm 4 pin PWM RPM 2000-6000rpm Size (mm) 70mm X 70mm X 15mm Size (inches) 2 3/4 Airflow 16-50 cfm Noise 20-45 dBA These make great replacements for AMD, Cooler Master, Thermaltake, and other brands of heatsinks. Bearing Double Ball Bearing Wire length 10