It’s to protect the prongs during shipping or whatnot so they don’t get bent, or to protect other things in the package from the prongs scratching them up. Might also protect them from corrosion.
I’m going to disagree with most of these comments. They don’t protect the prong so much as they protect the cord or other objects in the cords vicinity (painted surfaces, fragile surfaces, etc). The little plastic cap that covers tire stems on cars and bikes , while keeping it clean when installed, are primary to prevent chaffing issue on the inner tube whike shipped and stored; same thing with this prong shroud. They have holes in them as to not retain moisture I imagine.
Long story short, the prongs are metal and have corners. They are the strongest, “sharpest” thing in the box. The plastic isn’t protecting the prongs from us, it’s protecting us from the prongs.
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It’s a condom (only sort of kidding): They’re just meant to protect the prongs in shipping so they’re less likely to get bent, corrode, etc.
Typically they’re discarded after you start using the device but if it’s something frequently put into storage you could hang onto it.
It’s designed to keep the prongs from collapsing or extending during manufacturing and shipping.
I believe it’s to protect the prongs from getting damaged during shipping - and if the container gets rained on or something, it could provide some protection from that
As long as it remains covered the lizard people cannot see it.
The plastic piece goes onto the metal pieces
