•The surface of the reinforcement ball is made of quality silicone, an environmentally friendly silicone cap, and no odor when exposed to sunlight •This steering wheel knob has a built-in metal bearing steel bead for high freewheeling strength and smooth 360-degree rotation without jerks •Soft non-slip knob with comfortable hand feeling protects the steering wheel and palms from wear and tear, giving you a good driving experience •The steering wheel swivel comes with its bayonet, making installation simple and easy. You just need to take out the booster ball and snap it in the right place and reinforce it with screws •Compatible with most standard steering wheels and is suitable for cars, minivans, limousines, trucks, SUVs and vans Note: •1. Suitable for cars with factory power assist. •2. Can only be used at speeds below 20km/h. •3. Make sure the booster ball is fixed before each driving. •4. Hold the steering wheel with both hands when driving. Do not use this product in emergencies. Package included: •1 x Steering Wheel Power Handle Aid