
Advantages: They are definitely thin-walled since they are impact nuts. So far, so good. I have yet to decide where to store them but for now they are staying at home in their blue plastic box. I like that the white plastic sleeve slides off when needed. As stated in the product description, sizes 17mm, 19mm and 21mm are included. Not so good: In the second image of this article on Revain, it's pretty clear that the size of the red outlet is printed in white letters. The sockets I received only show the dimensions and markings. There is no imprint. This makes them look cheap. However, it looks like the first picture of Revain has a purple rosette on the lettering. The way the labels are attached doesn't matter to me as long as the sockets last.