Arkon RMHM4AMPS Robust Car Headrest Mount with Metal 4-Hole AMPS Head and Security Hardware (sku 55952)Headrest mount is compatible with 4 Hole AMPS devices For use in the front or back seat of taxis and other passenger vehicles Use with straight bar headrests only Security hardware included Arkons RMHM4AMPS car headrest mount is part of Arkons Robust Mount Series. The metal 4 Hole AMPS head is ideal for securely mounting an AMPS compatible device in the front or back seat for use in taxis and other passenger vehicles. Security hardware is included in