This package is not a complete mount solution and includes only the Heavy-Duty Aluminum Seat Rail or Floor Mount Pedestal with 22-inch Flexible Gooseneck. (Holders sold separately.) Arkon's GN088L22AL truck seat rail or floor mounting pedestal replaces or upgrades an existing pedestal and is compatible with Arkon's Dual-T universal smartphone and tablet holders (sold separately), including the Slim-Grip Ultra Universal Smartphone and Midsize Tablet Holder (SM060-2), Slim-Grip Universal Tablet Holder (TAB001), Universal Tablet Push-Button Holder (TAB003), and Mega Grip Universal Smartphone Holder (SM040-2). The heavy-duty seat rail or floor mount is made of strong yet flexible aluminum with a strong metal base, and is ideal for service vehicles, trucks, or those who need easy access to their devices but prefer mounting them somewhere other than the windshield or dashboard. Use a socket wrench to install the mount to the car's seat rail. Loosen the passenger seat track bolt, insert the included seat track bolt bracket, and then retighten the bolt. Bend the 22'' gooseneck and rotate the swivel ball adapter head for 360-degree rotation for exact positioning of the device. Optional floor brackets are included for screwing the mount directly into the floor of the vehicle. (Warning: Drilling into the vehicle's floor may damage the vehicle. Use caution and consult a mobile install professional to avoid drilling into any sensitive vehicle components.) A metal conduit is also included for bracing the mount's gooseneck against the car's console or other area to minimize vibration. For complete mount solutions, Arkon recommends the Universal Tablet Seat Rail or Floor Mount with this 22'' Flexible Gooseneck (TAB188L22) for mounting a large tablet, or the Universal Seat Rail or Floor Mount with this 22'' Flexible Aluminum Gooseneck (SM688L22).