RAM® Universal Marine Electronic Mount with Key Lock Knob HOOK-9 The rectangle base contains different

The rectangle base contains different combinations of pre-drilled holes which will match up to many electronic devices and mounts

This kit comes with a 6" x 6" base with an industry-standard amps hole pattern

The RAM-200-1MU Provides a single C size socket with a metal knob and a 1/2" NPT threaded hole

This marine electronic mounting kit consists of a medium double socket arm

RAM® Universal Marine Electronic Mount with Key Lock Knob HOOK-9 The rectangle base contains differentThe RAM 111U DL consists of a 2. 5" diameter round base that contains the universal AMPs hole pattern, 9 inch double socket arm, locking knob and 6. 25" x 2" rectangle base. The rectangle base contains different combinations of pre drilled holes which will match up to many electronic devices and mounts, including Marine GPS, CB Radios, Ham Radios, Gimbal Brackets and more.