Car Steering Wheel Booster 360 Degree Rotation Steering Wheel Knob Ball Labor-saving One Hand Steering Booster Car Accessories Car Steering Wheel Booster 360 Degree Rotation Steering Wheel Knob Ball Feature [more labor-saving]: operate with one hand, complete at one go, bid farewell to both hands, quickly turn the steering wheel, control at will and turn with less effort [smooth rotation]: with built-in metal bearing, rotate 360 degrees smoothly and refuse to get stuck [anti slip silica gel]: high quality silica gel is not easy to slip. The power ball rotates and the steering is safer [convenient installation]: simple operation and fast installation [precautions]: it is applicable to the vehicle with power assisted. It is only used at a speed of less than 20 kilometers per hour. Before driving each time, please confirm that the power assisted ball is in a fixed state. Xu holds the steering wheel with both hands when driving. This product cannot be used in an emergency TypeCar Steering Wheel Booster Colorblack Size6.2*7*1.3cm MaterialPC + ABS + metal steel + silica gel Package include1pc Car Steering Wheel Booster Note: 1.Please be reminded that due lighting effects, monitor's brightness/contrast settings etc, there could be some slight differences in the colour tone of the website's photo and the actual item. 2. Item Measure by hand, it could be 1cm different,your kind understanding will be much appreciated.