I am very happy with the product because it is made of a stable light metal and as indicated only has the label mm, hence no unnecessary extras. It can be easily connected to my other existing Step Up Rings and separate again, which are from a different manufacturer.
Such Step Up Rings are super convenient because it me with all my lenses comfortably connect Enable filters with a largest possible thread / diameter and to use without problems.
In summary, I recommend this product to anyone who is not more for each lens specifically the filter wants to buy and thus a lot of money by Posing.
My opinion and saves money;)