Make clean cuts with fresh blades that include a built-in safety carriage for easy handling. Keep your SureCut LED Rotary Trimmer (sold separately) working at its best by replacing dull blades with these new ones. The razor-sharp, 45mm, stainless steel rotary blades make clean cuts through thick paper without tearing or fanning. Safety carriage design makes handling, replacing & disposing of the blades safe & easy.