RE: Replacement Fein tools
Last year I borrowed a Fein tool and of course needed a few extra blades. I used some Bosch and some others ???? and they all worked Fein. I won't say the originals weren't the best but the others were more than good enough for what I was doing.
I ran across the Fitzall also on the net but my local bldg. supply had lots of good blades so I never tried them.