The MDE09 comes with a plate that can be attached to the DVR which allows the option screw mounts be installed on the DVR for MotorCycles or any installation. All that is needed is one bolt or screw approximately 3/8" to attach the mount to.
I suppose you could use washers and attach with a smaller bolt or screw as well. The entire length of the mount for mounting plate to treads to attach the DVR is approx 5" with 2 pivot adjustments.
This mount will not work on any other Dash Cam. It is for the MDE09 only!