★These duralumin plates offer enhanced rigidity compared to standard aluminum counterparts. ★Front plate is compatible with 9,13 and 19mm rollers, rear plate with 9, 11, 13, 17 and 19mm rollers. ★Sharp blue color will provide a welcome splash of color to your car! Compatible Chassis MA, MS, AR, VS, Super-II, Super X, Super XX and Super TZ-X chassis cars. *Some chassis and bodies may require modification.