That is a color variation for the popular Mass Damper set that has been offered as Item 15501. It features the weight parts with an awesome black–plated finish rather than the plain brass pieces in item 15501.
The included dampers are 1.5g and 3g lightweight and smaller mass dampers. They truly are perfect when race on songs with lots of slopes. Their smaller size entails less alterations to body/chassis, and much more placement options! Previous mass dampers had been between 4.5g and 15g.
7x5.5mm (1.5g) Weight x2 7x11.5mm (3g) body weight x2 Parts for attachment, and ball caps included. Compatible with all Mini 4WD and Mini 4WD PRO cars.