5015 6015 7515 USB Blower Fan 50mm 60mm 75mm 5V DC Brushless Turbine Turbo Cooling Fan for Helmet Laptop 3D Printer Ventilaiton

Specifications:Dimension: 50x50x15mm/60x60x15mm/75x75x15mmBearing Type: SleevePower Connector: USBRated Voltage: DC 5V Package include：1/3PCS 5015/6015/7515Blower Fan(please choose the model and quantity you need,we will send the goods according to your choice.)Notices：1.Transition: 1cm=10mm=0.39inch.2.Compared to axial fans, blowers produce slightly more noise when working.3.Compared to other bearings, double ball bearing fans produce slightly more noise, but last longer.4.The current on the label will be updated from time to time, but keeping the other parameters the same.