★These plates make possible a whole range of Mini 4WD car modifications, including the installation of 13mm and 19mm rollers while keeping the car inside official Mini 4WD width regulations. ★The parts feature white printed Tamiya logo and roller size markings. ★Do not use cleaners, as they may damage the printed surface. Compatible Chassis Mini 4WD and Mini 4WD PRO cars ★Use with separately sold rollers. ★Some bodies and chassis may require modification.