Second Filament Spool Holder for Ender-5 (with dual extruders)

I recently upgraded my Ender-5 with the TH3D Creality dual extrusion upgrade board. The second extruder needed a second spool holder, so I measured the cap on my Ender-5's spool holder and modeled this to replace it. The second spool holder screws directly into the end of the stock Ender-5 spool -- just remove the cap and screw this on.

Someone else may have already done this, but I was without wifi when I needed it, so I whipped it up in Inventor. Hope someone else can use it!