10 Blade Tumbler vs. F/Blade Tumbler?
First: It seems to me that wafer tumbler and blade tumber are the same thing. Am I mistaken?
Second, and my real question: What's the difference between a 10 blade tumbler and an "F/Blade" or "F Blade" tumbler? I understand what the 10 blade is; but I have no clue what an F-blade tumbler is. Can anyone explain? I'm seeing this terminology on American Lock padlocks.