Mini 4WD Setting Gear Set

★Make sure your Mini 4WD model is prepared for whatever the course has to throw at you! ★This gear set allows you to set it up with a choice of 5 gear ratios - 3.5:1, 3.7:1, 4:1, 4.2:1 and 5:1. ★A 1.4mm-diameter hollow prop shaft and 620 ball bearing are also included.