I've used the chainring nut wrench on an SNG that I used to own whenever I needed to adjust the pivot. Later sold that knife, and haven't had to really use it on my current SNG. However, back when I did use it regularly, it worked really well... Actually before it will fit, you'll have to file a little bit off the little tabs first. Really easy to do, just keep checking it against the pivot as you go. I found that the long handle really made it very easy to apply lots of torque if needed. Also I fumbled around much less as I could easily hold the knife handle and tool with one hand, and make adjustments with the other using an Allen wrench. I actually sold off another custom titanium spanner tool that I had bought because it worked so much better besides being so cheap.