Although many steering wheels have a booster device, but turn up there is still a very dignified feeling. Usually two hands are used to fight a circle, if you catch the phone, maybe have to round the hand. But after the installation of the ball, one hand can easily hit a circle. This is because the power of the ball through the physical principles, the dispersion of the force on the steering wheel more concentrated in a position, will be handy to manipulate it. When the speed is too fast, do not use, safety first. Products below the steering wheel bayonet for the alloy material, the upper turntable is ABS plating. The inner side of the circular bayonet comes with a rubber ring, so it will not wear the steering wheel.
eBay