Arkon TAB801 Heavy-Duty Tablet Car Holder - Seat Rail / Floor Mount Arkon\'s Adjustable Heavy-Duty Seat Rail Car Mount for Tablets features an innovative holder that adjusts to fit any tablet having a 9\"-12\" screen size, even those with protective cases. The 22\" heavy-duty aluminum mounting arm is held securely to your car, truck, or van\'s seat rail. This tablet mount option is commonly used by fleet or service vehicles, law enforcement or emergency service professsionals, real estate agents and other mobile executives, and can also be attached to the seat rail in the backseat for viewing by other passengers.