A steering wheel holder, also known as a steering wheel lock or steering wheel immobilizer, is a mechanical device designed to secure the steering wheel of a vehicle in a fixed position, preventing its movement. 

This device serves multiple purposes, including theft prevention, safety, and maintenance. It's often used in situations where the vehicle needs to be kept stationary or secure.

Theft Prevention: 

One of the primary purposes of a steering wheel holder is to deter vehicle theft. 

When engaged, the device immobilizes the steering wheel, making it extremely difficult for a thief to turn the steering wheel and control the vehicle. 

This is particularly effective in preventing "hot-wiring" or unauthorized use of the vehicle, as even if a thief gains access to the interior, they won't be able to drive away without disabling the steering wheel holders.

Safety While Parked: 

Parking on inclines or uneven surfaces can sometimes cause a parked vehicle to roll unexpectedly. A steering wheel holder can help prevent this by keeping the steering wheel fixed in place, reducing the risk of the vehicle rolling away and causing accidents or damage.

Vehicle Maintenance: 

During maintenance or repair work, a steering wheel holder can be used to keep the steering wheel steady. 

This is especially useful when tasks require the front wheels to be lifted off the ground or when performing alignment adjustments. 

By immobilizing the steering wheel, mechanics can work safely and efficiently without worrying about the wheel moving unexpectedly.

Car Display or Storage: 

For car enthusiasts or collectors who display their vehicles at events or store them for extended periods, a steering wheel holder can help maintain the vehicle's aesthetic and prevent wear on the tires caused by constant steering movement.

Types of Steering Wheel Holders:

• Mechanical Locks: These are physical devices that attach to the steering wheel and lock it in place. They often have adjustable arms that span across the diameter of the steering wheel, preventing it from being turned.
• Wheel-to-Pedal Locks: This type of lock immobilizes the steering wheel by locking it to the brake pedal or clutch pedal, preventing any movement of the steering system.
• Collapsible Bar Locks: These locks consist of a telescopic bar that extends from the steering wheel to the dashboard or the driver's seat, effectively locking the steering wheel in position.

Usage Considerations:

• Compatibility: Steering wheel holders come in various sizes and designs to accommodate different types of steering wheels. It's important to choose a holder that fits your vehicle properly.
• Ease of Use: Some holders are designed to be quickly and easily engaged, while others might require more effort to set up and release.
• Quality: A well-built steering wheel holder should be durable and made from high-quality materials to ensure it functions reliably.

In summary, a steering wheel holder is a valuable device that provides theft prevention, safety, and convenience. It immobilizes the steering wheel, making it difficult for unauthorized individuals to drive the vehicle. 

Additionally, it offers stability during maintenance and helps prevent accidental rolling. When choosing a steering wheel holder, consider factors such as compatibility, ease of use, and quality to ensure effective and reliable functionality.