Three speed settings to set the fan to high,medium or low speed to find the ideal level or air circulation Mechanical knob,easy operation,key adjustment wind speed Oscillating fan with adjustable tilt angle The one-touch head design allows single-head punching and shaker head operation.The fan blade is resistant to pressure and does not break easily.The wide angle design provides more airflow. Applicable to factories,workshops,shopping centers,industrial fan products,buy with care.