Traxxas replacement Gear set is constructed of gray plastic and brass. INCLUDES: One 25 and 41 tooth output gear. One 35 and 16 tooth gear (gear #7). One 10 and 62 tooth gear (gear #9). One 10 and 50 tooth gear (gear #11). One 10 tooth pinion gear. One grey plastic bushing race. One grey plastic output gear race. Two brass output gear bushings. One exploded view.