?Steering Assistance? If you want to relieve pain in arms, shoulders, back, or prevent pain from prolonged driving, Silicone Anti-slip Steering Wheel Knob can help you do it all.When you need to turn the steering wheel, it provides you with auxiliary force, so that you can complete the steering, turn around, parking and other actions more easily. 【General Model】Universal For Cars, Trucks, Boat, Tractors, both with and without steering wheel covers are suitable. 3.5in ?High-Quality Materials?It is made of silicone and High-grade ABS with anti-slip function, and you will feel comfortable and safe when you drive with it. Especially suitable for Ladies drivers, long-time drivers, Taxi drivers. ?Assisted Installation?Package include installation tools, you need 2 minutes to install it. Khazna Steering Wheel Knob has built-in metal bearings, 360 rotation, silicone quality, Anti-slip and odorless, not afraid of exposure to the sun. ?Worry-Free Purchase?Please rest assured that we provide satisfactory replacement and refund service. We want you to feel secure with your purchase, so please directly contact our customer service if you have any problems.