Trident Case Extendable Headrest Mount - Retail Packaging - Black Arkons Extendable Headrest Mount for Kraken A.M.S. phone and tablet cases allows you to mount your mobile device to your cars headrest posts. Extendable headrest mount for mobile devices. Arm extends 16 to 24. 360 rotation for custom viewing positions. Stable and secure attachment to standard two-post headrests. Includes adjustable hooks that are compatible with nearly all headrests. Compatible with Trident Case Kraken A.M.S. phone and tablet cases only. Extension Arm Locks For Rear Seat Passenger Viewing Tablet Adapter Allows For Mount Compatibility With Kraken A.m.s. Tablet Cases Adjustable Headrest Post Clamps Slide Together To Fit Around Any Standard Headrest Posts--securing Knobs Allow For The Clamps To Secure Tightly To The Posts, Keeping The Mount In Place Tightening Ring Loosens & Tightens To Allow For 360 Rotation For Custom Viewing Positions Adjustment Knob Loosens To Allow Arm Adjustment For Custom Mount Positioning & Viewing All Materials Are 100% Rohs Compliant Includes Installation Guide & Smartphone & Tablet Adapters