The ServoCity 1616 Series Drop-Center Bearing Plate (2mm Drop) - 4 Pack is engineered to enable the mounting of bearings with a 2mm offset from their standard position. This configuration is particularly beneficial for a 6-wheel chassis, allowing the center wheels to be lowered or the outer wheels to be raised. This adjustment concentrates the load on the center wheels, effectively shortening the wheelbase and enhancing the chassis's maneuverability.