Material: Car steering wheel spinner knob is made of plastic material with metal bearing, durable and flexible to use. Convenient and Safe: 360 degree rotation connection part enhances convenience and safety for driving. Making long-distance driving easier. Also, spinner knob can lessen the turning radius and helps beginners and female drivers to drive safely and conveniently when turning. Fashion booster ball for steering wheel: Ball shaped design with anti-slip surface is comfortable to grip. Elegant appearance design make your car more fashion. Suitable for: The vehicle steering spinner is compatible with all types of cars and vehicles such as sedans, saloon cars, trucks, for SUVs etc. Specifications: Material: plastic, metal Color: black Size(L x W x H):about 50x22x63mm Package included:1pc x spinner knob