I love this 2 inch die and would buy it again. does not match the tool I received. In fact, I like the one they sent better than the one in the photo. I have attached 3 photos. There are 4 threaded holes (not 3), eighteen with 5/16 screws. Only one has a protruding knurled head, the rest of the set screws are flush All 4 have slots for a flathead screwdriver The thumb screw faces the other end Customs stamps I have. Unfortunately the threads are not at right angles to the die body. I screwed a longer screw into a hole and took a picture so you can see the hole is clearly skewed. The angle doesn't match the 4 holes so I don't think it has a design purpose but rather low quality. Aside from the angle of the holes, this is a good quality tool. The overall length is 15.5 inches and the handles are approximately 9/16 inches in diameter.