Sumex Car, Truck & Van Steering Wheel Aid Power Handle Assister Spinner Knob Ball - Carbon Carbon Design - Sumex Branded Fits almost every steering wheel - Ideal for large vehicles, HGVs or disabled drivers. Small steering radius with this steering knob helps all drivers drive more safe. Fits securely with a clamp which can be removed and installed easily & quickly (Simply bolts onto your existing steering wheel). Easy steer steering wheel driving aid The bearing installed inside makes the steering soft and keeps the knob durable Refined design and easy mounting and use. Makes turning and parallel parking a lot easier!