Are you still looking for a teaching apparatus to let your student know the main structure of the electric motor? Then, our model of mini electric motor set is one of the for you. Using plastic material, it is safe and durable. A perfect physics teaching aid for you. Features - Color: Black. - Material: Plastic. - Size: Approx. 14.00X11.00X8.70cm/5.50X4.32X3.42in. - When doing a DC motor experiment, connect the 3V~6V DC voltage to the two terminals, that is, normal , with the voltage, if it does not turn, it can be adjusted manually. - Note that before turning on the power, the two touch the same commutator to avoid short circuit. - The magnet N is extremely red, and S is extremely white or blue. Pay attention to the when installing. - It is an indispensable instrument for teaching and experiment in middle schools, and it can be used for both and DC. - Widely applied in home, laboratory, middle school, training institution, research institute, etc. Package list: 2 x Set of Electric Motor Model