OK so on looking for blades for my newly acquired Hawk, I came across these. Schick Pro line.. They are meant to be only available in japan where they are marketed to professional barbers. They state they are to fit all feather artist club razor's...so i'm guessing the hawk, cobra and mongoose etc. The other thing I found interesting is that are quoting them to be smoother and much more forgiving than feather pro blades. Any one have any input on these?