K400S K-400S Diamond Original K400S Heavy Duty Hatchback/Trunk Mobile Mount - K400 Base with UHF Mount - 13.5 Feet of RG316 - PL259 Heavy duty trunk lid/hatchback mount. SMA connector gives direct connection to HT radios. Includes RSA3474 adapter for mobile radios. No holes/drilling required Rubber mounting pad protects mounting surface Four set-screws insure mount strength for larger antennas 2-axis adjustable