Those are correct. I'm a bit dubious of genuine ones where the picture shows an orange/red cap, but it could just be the wrong picture. As far as I know the original ones (made by bosch) have black outer covers. Bosch seemingly made two versions, one for aftermarket and one for Volvo OE. The volvo one has insulation of some sort, to prevent the spark arcing to the cap housing. But the non -insulated bosch is fine in my opinion.
I once tried a cheap version, the screws were fully threaded and so was the cap, hard to explain but it doesn't work like that!
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