ITEM NAME:Auto Car Steering Wheel Booster Spinner Knob Turning Ball Auxiliary Handle Steering Wheel Silicone Booster Ball Spinner Knob Auxiliary Hand Control Turning Catcher Accessories SPECIFICATIONS.(Item included: 1 x Spinner Knob. Suitable for: Reversing or low speed turning. 3) Easy installation and no modification needed. 5) Made of Silicone, touch softly. 2) Perfect match for the original one.