Material: The car steel steering wheel booster is made of stainless steel and ABS, which is high strength, durable, not easy to break, high temperature resistant, can be used for a long time. Driving comfort: Ideal for people who drive a lot, who perform maneuvers regularly, or who have arm or shoulder pain (surgery, seniors). The steering wheel button can relieve your pain and fatigue. With this driving aid, getting behind the wheel becomes a pleasure again. Easier to use: 360 rotatable. Reduce steering resistance to manipulate, no matter parking, small driveway U-turn or backing your car. It is easy to handle, even if you use it with one hand in a cluttered space. No more rushing in an emergency. How to use: 1. Prepare a screwdriver. After unscrewing the screw, wrap the leather protective gasket over the steering wheel. If the steering wheel diameter is too large, you can use the gasket! 2. Attach the metal bracket to the steering wheel, then use a screwdriver to close. Just tighten the screws! Universal Compatibility: This car steering wheel button works well in almost all vehicles such as SUV, trucks, semi-trailers, tractors. Provides the essential support to control car steering wheels safely, conveniently and efficiently, suitable for prolonged use.