The Macally HRMOUNTPRO car seat headrest mount allows passengers to watch movies on the iPad/tablet conveniently from the back seat of the car. Mounts your iPad/tablet securely to the car's headrest; Supports headrest posts between 2"/ 5 cm and 7"/ 18.4 cm wide; Strong aluminum shaft can be extended to place cradle holder between the two front seats; Swivel ball-head to accommodate optimal viewing angles; Cradle fits iPad/tablet and any other mobile device between 5"/ 12.7 cm to 8"/ 20.3 cm wide; Soft grip pad and back support to protect your iPad/tablet from scratching; Quick rotation between portrait and landscape view; Quick installation and dismounting, no tools required.