If you look at every electronic item, then you can see this tools named brushless motor that serves as a driver of the electronic device. If the tool is damaged, then you can get it on a brushless DC motor. There, there are many options that you can choose and adjust to the electrical equipment you have.
If you are confused about how the tool works, then this is the explanation. In this motor, there are six important parts that we can remember: Rotor, Commutator, Brushes, Axle (axis), Field Magnet (magnetic field) and DC power supply (DC current). The motor uses magnets to produce movement (rotation). Maybe if we remember playing with a magnet then remember the basic things of the magnetic properties itself: the same poles will reject each other and the difference will be the attraction. In an electric motor the conditions of mutual “attraction” and “repulsion” this will produce a rotating motion or often referred to as a rotational motion.