The IPM688 seat rail or Floor mount for cars or trucks is compatible with iPad mini and other midsize 7” or 8” screen size tablets. It also holds iPhone XS Max, iPhone XS, iPhone XR, iPhone X and iPhone 8 and 8 PLUS. This mount includes Arkon's Slim-Grip Ultra universal midsize tablet or smartphone holder and a seat rail or Floor mount with 18” flexible aluminum gooseneck. The iPad Mini or iPhone can be easily inserted or removed from the mount with one hand. The top and bottom adjustable-leg design of the holder helps keep any side buttons and ports unobstructed. Included with the holder are 8 support legs 4 short and 4 longer versions that can be customized to work with the spring-loaded holder to extend as large as 7.5” tall using all four long legs or as compact as 4” tall using all four short legs depending on the size of your device. The car seat rail or Floor mount is made of strong aluminum, and is ideal for those who need Easy access to their iPad mini or iPhone But prefer mounting them somewhere other than the windshield or dash. Use a socket wrench to install the mount to the cards seat rail. Loosen the passenger seat track bolt, insert the included seat track bolt bracket, and then retighten the bolt. Bend the 18” gooseneck and rotate the swivel ball adapter head for 360° rotation for exact positioning of the iPad Mini or iPhone. Optional floor brackets are included for screwing the car dock directly into the floor of the vehicle. Warning: drilling into the vehicles floor may damage the vehicle. Use caution and consult a mobile install Professional to avoid drilling into any sensitive vehicle Components.