Description: 【Versatile Rotation】Enjoy 360° rotation and adjustable viewing angles with a ball joint design, allowing you to find the position for your phone or tablet 【Secure Installation】Car Headrest Mount Tablet Holder is quick and easy to install with a reliable snap on design that firmly locks your device in place, ensuring stable use even on bumpy roads 【Materials】Crafted from sturdy aluminum alloy and reinforced ABS, this Headrest Tablet Stand for Car Back Seat is built to withstand stretching and daily wear for long term performance 【Universal Compatibility】Car Tablet/Phone Holder fits cups up to 7.6cm in diameter and supports flat pc up to 12.9 inches, making it ideal for both smartphones and larger devices during car rides 【Convenient Features】Equipped with a movable hook for effortless left right adjustment on the headrest bar, plus an integrated water cup holder for added convenience while traveling Specification: Material: Aluminum, ABS Size Chart: Adjustable length 56cm-81cm/22.05inch-31.89inch Package Includes: 1 Car Headrest Tablet Holder Phone Mount Note: Please allow slightly errors 1-2 cm differences due to manual measurement