When should you use finish cut (FC) blades?

F or FC stand for the same thing: fine cut or finish cut. One brand might call their blade an F and another might say FC but they are referring to the same thing. The teeth on an FC blade are all the same length, so result in a smoother finish than the same blade in skip tooth (ST). 

Important: Unless you’re experienced or trained using skip tooth blades, it’s recommended to always get the F or FC version of the blade length you want. FC blades give pets more protection from nicks or cuts. When using any blade, pull skin taught to avoid bumping over rolls of skin.