Description Mini permanent magnet DC motor can be connected to 12V or 24V voltage, when connected to 12V voltage motor output speed 3500rpm; when connected to 24V voltage motor output speed 7000rpm; can cw/ccw, external speed governor can realize the speed control function and change the clockwise and counterclockwise direction of the motor output shaft; has the characteristics of high speed and low noise; with motor stand is the DIY generator Ideal choice Motor Parameters Model:3420 threaded shaft head Number of poles:2 poles; Rated power:30w Rated voltage:12V/24(v); Amperage:0.5a Speed regulation:External DC controller is required(purchased by you) to realize the speed regulation. Idle speed:3500/7000（rpm） ) Torque:1kgf.cm(12V), 2kgf.cm(24V). Output shaft length:38mm/1.49inch； Diameter of output shaft:8mm. Specification:12V 3500rpm,24V 7000rpm(motor suitable for 12V-24 voltage). Steering: can be controlled clockwise and counterclockwise(cw/ccw control). Length,width and height of motor mount: 58.2*48.1*51mm Packing List. 1*mini 12V/24V CW/CCW Permanent Magnet DC Motor. 1*Motor Holder 2*M4 Spacer