Bought because it was a brand I know and it was very cheap but when I got it I was really surprised at the quality, it has a brass set screw which I am sure of that it lasts longer than the aluminum empire screws used and the finish is really good, the level inserts into the pen and into the clear plastic so you don't have to worry about the lines rubbing off like with my empires - and Irwin squares. Coating on the blade so you don't have to worry about it becoming tarnished like Johnson's blades. Very happy with the quality and weight as well as the stiffness of the set screw. It works with my other blades so I plan on ordering more just for the heads.