Yet another XT60 cap

There are slight tolerances between the popular XT60 connectors, depending on the manufacturer, or maybe even on the batch.
None of the caps I tried work on all my plugs. so I designed this one with a little taper and partly split, so it has a certain "springiness".
So far, they work fine on all the connectors I tried.

I made only one version, I'll just print different colors if I decide I need different ones for full and empty packs.