Power Handle Car Steering Wheel Spinner Knob for Car Vehicle For beginners and ladies Premium quality ABS and leather material were combined to make this product. These two materials are uniquely sturdy and possess high durability, fit for prolonged use. Size : minimum inner diameter: 3.7cm, minimum length: 5.5cm; maximum inner diameter: 3.7cm, maximum length: 5.5cm Free spinning knob makes steering effortless Setting up this product takes a total of five seconds. The three step installation process is super quick and requires no tools. Simply find a suitable area to place it, open the rings, affix it and you're good to go. Dolphin fashion car accessory has been designed to be compatible with all types of cars and vehicles (generally). It is compatible with sedans, mini coopers, saloon cars, trucks, SUVs and mini vans.