It has a compact stirring device utilizing a rotating magnetic fied (created by a PERMANENT MAGNET) which induces variable speed stirring action. Stirring is accomplished by means of small teflon rotor, which when placed in the liquid to be stirred is capable of rotation by magnetic field applied from below the container.Continuous Heavy duty A/C stirrer with 1/4 HP Brushless, High Torque Variable Speed Motor with Hollow Shaft & propeller of SS 316, chuck, having facility of presetting & indication of speed. These Stirrers are specially designed brushless AC variable speed stirrers driven by frequency inverter to ensure reproducible speed with any load.