I used the dies with my DK93. The first rivet I needed to remove took me two tries. I was dealing with 8mm rivets, a layer of cotton, a layer of SF101 and fleece interfacing and a layer of webbing. The second rivet (same bag) took about four tries. I know that it was suggested to use the KX8J for these dies, just thought I'd give it a try with what I have. I'm not disappointed, I think I will need to buy the KX8J.