The CH-79MB is a special bracket to suit Landcruiser 70 series and similar with bolt-on rear view mirrors and can be used on selected monitors with 30 x 30 screw holes on the rear. For the CH-SMRVAHD73 monitor we have a locally manufactured adaptor kit available which allows this bracket to be fitted as this monitor does not have the required screw holes but is suitable for use as a mirror replacement with the elongated design.