ZMR QAV 250 Uni-Spacer 14,18 & 20mm - For 4mm and 3mm arms

Remix of Alexnovik. I wanted a 14mm high vs the 10mm uploaded.
Wanted to be able to fit my CC3D and Orangerx TX into it. The 10mm would of worked but a very tight squeeze. I just added on 4mm more for some "breathing" room. Also filled in the USB opening as my cc3d atom doesn't quite line up with it.

Note: Print the XT60 matching connector from his files.
Made modification in SketchUp. Sketchup lessons from BDan.

Now with 3mm arms option as well.
Now with 18mm height and 4mm arms.