usb fan mini noiseless 4-inch 6-inch 8-inch little fan car office cooling fan dormitory fan usb风扇迷你静音4寸6寸8寸小风扇车载办公散热风扇宿舍风扇

8-inch brushless motor [two-gear wind power] + extension cable 8-inch brushless motor [two-gear wind]] 6-inch upgrade 5 leaves [two gears] + extension cable 6-inch upgrade 5 leaves [two gears]] 6-inch brushless motor [1 gear] + extension cable 6-inch brushless motor [1 gear]] 4-inch wind small [1 gear] + extension cable

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