What brand rotary cutter does these blades fit. They don't fit OFLA cutters
Barb[/quote]
I have a Martelli Ergonomic cutter and the HF blades fit fine. They also will work in a Fiskars cutter. I do not own an Olfa so I cannot say, although the Olfa blades fit and work fine in both of my cutters.
~Shirley