Super large steering range and 6KG large torque waterproof steering gear. Adjustable soft and hard shock absorption of twisting teeth. Alloy chassis. Alloy gear. Alloy wheel shaft. Alloy differential cup. Alloy wheel drive shaft. The whole car is equipped with ball bearings. Fine Workmanship: Strictly control product quality and specifications during production. After tested: All items are checked and tested carefully by our technical department