Replacement base for the Garmin GPSMAP 5xxx.
This base is not the standard base it is not a ratcheting base.
You set and clock angle when you install it.
If you would like to change the clock angle you need to remove the center knob and lift the mount off the base and re-clock and tighten center knob.
I used PETG
Layer = 0.20mm
Support for center nut area.