Features 1.Wide Application: This driving knob compatible with most cars steering wheels which thickness is 1.3in. Fit most cars trucks tractors boats. 2Function: The steering wheel spinner knob could reduce the resistance of steering, also able to reduce the driver's tired during long time driving, ensure safe driving. 3Unique Design: The steering wheel knob spinner with dice shape looks cool and fashion, its punk style could also add your car interior more creative and ambiance. 4Durable Use: This steering power handle is made of premium resin and metal alloy, durable construction for long time use. And its smooth surface could offer more comfortable experience. 5Easy Installation: Easy to install this steering wheel ball, just takes you a few minutes to tighten screw nuts with hands or a wrench. Ready to use, convenient and fast. Specification Item Type: Steering Wheel Spinner Material: Metal alloy + resin Fixing Ring Diameter: Approx. 3cm/1.3in Fitment: Fit for most car steering wheels, but also fit most cars trucks tractors boats Package List 1 x Steering Wheel Spinner