This is a GX16 plug cover meant for a Vesc Onewheel! It will work with any number of pins on the plug, and has been confirmed with GX16-4, -2 and -6. Print in TPU with the handle upwards, add some supports on the outside perimeter, none on the inside of the plug. Make sure to have enough time for the filament to fully cool so it doesn't become blobby on the top of the handle. If you want to somewhat lock it into place, you can twist it to offset the notch. It's still able to be pulled out but it's significantly harder too and has allot more friction.