A steering wheel is a circular device used in vehicles to control their direction. It is connected to the vehicle's steering mechanism, allowing the driver to turn the front wheels left or right. Steering wheels come in various sizes and designs, often featuring controls for functions like audio and cruise control. Most steering wheels are made of materials like plastic, leather, or rubber for comfort and grip. They are typically mounted on a column that connects to the vehicle's steering system, which translates the driver's movements into changes in the vehicle's direction.