The procedure to choose the right product for specific application must take into consideration of: the weight (that is the pressure over the brush),  the surface to work, the RPM / type of construction of the motor and the transmission type. Generally speaking, the lower is the rotation speed, the most effective is the pressure over the brush and deeper is dirt removal. With the increasing of rotation speed, lower is the effect of the pressure over the floor. Different accessories combinations, rotation speed and motor power can provide the solution for any application: from dewaxing or deep scrub, up to polishing or buffing; from the crystallization up to spray cleaning; also carpet cleaning or sanding.