Effortless Installation This car tablet holder features two screws and one joint. Its ergonomic design allows you to install and adjust the holder without tools. Soft padding and protection The holder includes soft padding to protect your device and the car headrest. Measured from the inside of each post, the post spacing should be 5.12 inches (13 cm) apart. This headrest mount is suitable for headrests with a post spacing of 5.12 inches and post width up to 0.51 inch (approximately 13 mm). Rotation and viewing flexibility The joints and arms are fully adjustable for 360degree rotation. You can use your tablet in portrait or landscape mode, and you can set the distance and viewing angle to suit everyone in the vehicle. Compatibility and security This headrest mount supports devices from 4.7 inches to 12.3 inches in screen size. The springloaded clamps hold devices firmly without movement. The design includes intentional holes that allow you to mount your own device while clipped to the car headrest. Use scenarios Long road trips with rearseat passengers: keep tablets accessible for entertainment, video streaming, or learning apps. Family or rideshare vehicles: provide a convenient viewing station for passengers to watch movies, play games, or navigate without holding a device. Mobile business or shuttle use: display presentations, training videos, or travel content for onthego review and collaboration.