★These are lightweight versions of the popular 13mm ball-race rollers. ★Each roller has 10 holes for a weight savings of around 30% compared to Item 15437. ★Built-in 520 ball bearings ensure smooth, efficient rotation. ★Black rollers will go well with any number of color schemes. ★Screws and other small parts for attachment are included.
Mini 4WD & Mini 4WD PRO cars