Superior Quality. A nice addition to my kit, essential for a VW diesel project. "Just a comment on the rabbit trail. I miss metal boxes, albeit from years past. I have my first set of 1/4-3/8 combo sockets from circa 1971 and a deep wall set. Both metal boxes are in excellent condition, of course with some small scratches. Even two adolescent boys survived. :-) (I was sweating though) I've been through quite a few car, truck and ranch projects.