Dimensions: 120mm × 120mm × 12mm Voltage:DC12V Current:0.20A Reference speed: 1400 ± 10% Air Flow:39CFM Noise Reference: 18 dBA Bearing Type: Sleeve Bearing 13 streamline sickle blades reduce the resistance and increase the cutting area. One time injection molding frame, double-layer reinforced pillars, protection against vibration. Only 12mm thick, saving space, easy. Pure copper shaft core. It can maintain oil bearing and prolong service life.