The SM 2918 is a heavy-duty 2-brush carbon set specifically engineered for the high-torque power window motors used in larger SUVs and premium passenger vehicles. While categorized under "Fan Brushes" for technical classification, these are precision-sized for the window regulator motors of vehicles like the Mahindra Scorpio and XUV500. These motors require a higher current density to lift larger, heavier glass panels compared to standard hatchbacks.