1. **Durable Structure** They are made of plastics and metals. The combination of metal bearings and non - slip matte contact surfaces is durable, ensuring long - term use with few malfunctions. 2. **Excellent Performance** During use, it can reduce the turning radius, helping novice and inexperienced drivers navigate turns safely, thus facilitating safe driving. 3. **Easy Installation** Not many installation tools are needed. Simply find a suitable position to place the steering wheel knob, install the outer layer, insert the inner pad, and then secure the screws. 4. **Non - Slip Surface** The spherical design of the square disc fine - tuning knob has a non - slip surface, providing a comfortable grip. Its appearance design can make your car look more stylish. 5. **Versatility** This steering wheel fine - tuning knob is suitable for various types of cars and vehicles, such as sedans, four - door sedans, trucks, SUVs, etc.