Car/auto/vehicle Handle Control Steering Wheel Knob Clamp Steering Wheel Spinner Material: Bayonet is alloy, Spinner is excellent ABS with carbon fiber lines figures Use the provided PVC band as it is, or cut the PVC band according to the thickness of the steering wheel When turning car, it lessens the turning radius and helps beginners and lady drivers to drive safely and conveniently. Compatible with most major of vehicles. This device is designed by virtue of physics, concentrating more power up on one point not all the wheel, facilitating operation handy and facility.