TRAXXAS X-MAXX Chrome steel back Gear - 1pc - GPM STXM1200R/G1
1. Quality chrome metal product amount of hardness of 50.2. 13 enamel spiral gear created from high-quality chrome metal.3. Once the quick start brake stopping system system, it generally does not harm. The car but run effectively. 4. merely use with spiral main gear (STXM1200FR/G). Maybe not appropriate stock low grade steel gears.