Mantle with magnetic stirrer built-in, able to handle up to 721 spherical flask. Ideal for continuous distillations. The variable speed control (included) offers total mixing management. DC filtering allows the 1/50 hp motor to run cooler, thus extending motor life. With 4" feet to allow bench clearance and air flow. Stir motor control is detachable and allows speeds of 100-1850 rpm. Supplied with. 75" diameter x 3" long magnetic stirring bar..