Literally they had one job. This has a schuko plug sized receptacle but with Italian plug size holes. So it can convert from Italian 10A plug to Italian 10A plug… really useful…
Producing who know how many millions of useless converters and shipping them in a different continent without trying them or even reading the specs…
That appears to be an earthed plug into an unearthed adaptor. They’re not supposed to fit.
Note, I’m not familiar with Italian plugs, but they look a lot like Dutch plugs which I grew up with.
The adapter has the earth, is the middle pin and also has the side contacts that would touch the earth on the side of the schuko (here just for aesthetics because the schuko pins can’t fit)