"Robatoy" wrote in message
...
I understand that old style Fein units will take anybody's blades. The
newer style, with the star, won't.
I did a bit of Googelarizing and found this:
http://tinyurl.com/yzkamrr
Does anybody here have anything to add?

The older Multimasters had no key/indexing pin/pins to keep the blade from
rotating. Newer models have this feature as do the newer blades that will
work with this enhancement.

The older Multimasters not having a key will use most any blade that is
designed for key type tools. Older blades will not fit the newer tools made
with indexing keys.