Heavy-duty metal ring and pinion gears, solid axles and axle shafts combined with a full set of ball bearings provide the Mini-Rock Crawler with durability for extreme, precision climbs.

• 重型金属环和小齿轮齿轮，坚实的车轴和车轴轴结合一套完整的球轴承提供小型履带式摇滚与耐久性的极端，精密爬升。