Originally Posted by gramalama9
What kind of cutter do you have? The HF blades have a round, not notched hole, so if you used them in an Olfa or Fiskars, they may not fit right. Martelli cutters use the round hole.
This is what I found also, and I thought "Oh no, bad deal". But when I changed to a different cutter, the blades do fine. I will buy them again.