Beware the ring 43- 52

I put 3 stars because the product looks good overall, properly screwed on a 52mm UV filter ...
BUT .... I bought it for the unique ring 43-> 52, appears to be a 40-> 52 despite the silkscreen on the ring itself. Manufacturing error?
This is clearly the only mistake of the series, and forcing the ring 37-> 43 did not screw it ...
Damage