Review on 🔪 Fiskars 157390-1001 Titanium Rotary Replacement Blades – 28mm, 2 Pack: Superior Cutting Performance for Precision Crafting by Carrie Spencer

(Part 416356) and work great. I am very happy with these blades. I have to say that my rotary trimmer is about 10 years old (see photos 1 and 2). These "F" style replacement blades have orange spindle lugs just like the original. Blades that came with my trimmer (photos 3 and 4). Changing the blade is very easy. You flip the orange lever, lift the knot, remove the old blade, and simply insert the new blade into the same slot (Photo 5). You are ready to go! If, like me, you accidentally buy replacement 28mm blades elsewhere that don't have orange "tongues" down the center, as far as I can tell they aren't with these "F" style blades interchangeable. I tore the orange tabs off a used "F" blade, but they don't fit as a replacement for the "other style" with a round hole (pic 6-8). I hope this information is helpful to others looking for the "F Replacement Blades" style (with orange tabs)!