If the blades are real bad you're going to need more coarse stones to get the dings out. If they out of the package or just been shot into broadhead targets you can get away with more fine ones. Personally I'd get the diamond kit and a super fine Arkansas to finish with, but I like my heads scary sharp. You can probably get a razor's edge out of just the diamond stones. Note that it says the system doesn't work for monolithic 3 and 4 blade heads.