I purchased this clamp because I had a hard time clamping Spyderco knives on the Kadet pro, This clamping system allows you to get a good angle Knives like the PM2, Manix, Shaman etc.. the only thing I do not like is you have you have remove the knife from the clamp and flip it to sharpen the next side. I wish you could just flip it using the Kadet Pro.