This SWORKz factory replacement brass balance plate is designed for the S12-3 2WD buggy platform and weighs 15 grams. It mounts to the chassis using three screws and allows tuning of weight distribution to dial in handling balance. Brass construction provides a denser, more concentrated mass compared to standard aluminum plates of the same size. Features: Brass construction for high-density weight tuning 15g rated weight Three-point screw mounting Designed for the SWORKz S12-3 2WD buggy 7/7/26 cs