The steering wheel knob makes steering so much easier! Easy to install and sturdy, installed in about 2 minutes, works smoothly, grips the steering wheel perfectly. Free-spinning knob makes steering effortless.Simply attaches to the steering wheel. Model: Universal Color: Black + Silver Material: ABS + Aluminum Package Contents: 1 x Steering Wheel Booster Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.