The reason why the steering wheel booster ball makes long-distance driving easier is that it can rotate 360 degrees and has strong vitality to improve the convenience and safety of driving. The steering wheel booster ball is designed with a non-slip surface, which is comfortable to grip. It is safe and convenient for beginners and female drivers to drive by reducing the turning radius. It is made of high-quality silicone and ABS material. The diameter of product is 6.2 cm, the height is 7 cm. It is suitable for car, saloon cars, trucks, SUVs, van and so on. Item Name: Steering Wheel Knob Material: Silicone, ABS Features: 360-Degree Rotation, Fine Workmanship, Labor-saving Size Details: Diameter: 6.2cm/2.44" (Approx.) Height: 7cm/2.76" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Steering Wheel Knob