Fiskars Rotary Trimmer Blades give you a variety of shapes to choose from. These blades each features a razor-sharp, rolling blade, “F” style/ 28mm, that effectively and efficiently cuts without fanning, tearing or bending. They were designed to fit into Fiskars 12″ Rotary Paper Trimmers both desktop and portable. Handle with care and keep out of reach of children. 28mm Style F Cutting 2pc- Use with Fiskars trimmers 154470-1004, 154480-1001, and 199080-1004.