Features:brand new and high qualityMaintenancefree double ball bearing, long service life6000RPM high speed, sufficient heat dissipation air volume and wind pressure.PWM temperature control version, supports 4pin PWM intelligent temperature control speed,With high precision ball bearings.Can be installed in CPU radiator, or used on the chassis.Large air volume design, stable air flow, low noise and large air volume.Specifications:Model: W12E12BS11B5~07Size: approx 120x120x38mm/4.72x4.72x1.5inBearing: high precision double ball bearingVoltage: 12VCurrent: 1.65ARotational speed: 6000RPMNoise level: 70.5DBAAir volume: 267CFMWorking life: 10.0000 hoursMaterial: PlasticNote:Please allow 01cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package includes:1 PC x W12E12BS11B5~07 Cooling Fan