Features: 1.Premium Material: Steering wheel knob is made of premium metal and resin material, rustproof, wear resistant, high strength, sturdy and durable. 2.Universal Fitment: Steering wheel suicide knob universal fits for cars, trucks, tractors, boats, etc. Perfect matching, fixing ring diameter is approx 3cm/1.2in. 3.Professional Design: Professional manufacturing, exquisite workmanship, comfortable hand feeling, reduce the resistance of steering, ensure safe driving. 4.Skull Shape: The unique skull shape of steering wheel spinner knob adding unlimited driving pleasure to you, easy to control, cool and stylish. 5.Easy Installation: Easy to install, no modification is required, direct replacement for the old or broken one, convenient for using, save your efforts. Specification: Item Type: Steering Wheel Spinner Knob Material: Resin, metal Style: Black helmet Fitment: Fit for most car steering wheels. Fit for most cars trucks tractors boats Fixing Ring Diameter: Approx. 3cm/ 1.2in