Multifunction Myrtus Vehicle Steering Wheel Suicide Spinner Knob Power Ball This device is designed by virtue of physics, concentrating more power up on one point not all the wheel, facilitating operation handy and facility. When turning car, it lessens the turning radius and helps beginners and lady drivers to drive safely and conveniently. Material: Bayonet is alloy, Spinner is excellent ABS with mahogany figures Use the provided PVC band as it is, or cut the PVC band according to the thickness of the steering wheel