Straight Edge: Most Paper Cutter Blades Have A Straight Edge For Precise Cutting.2. Angled Or Beveled Edge: Some Blades Have An Angled Or Beveled Edge To Reduce Friction And Improve Cutting Performance.3. Replaceable Blades: Many Paper Cutters Have Replaceable Blades For Easy Maintenance.Applications1. Office Use: Paper Cutter Blades Are Commonly Used In Offices For Cutting Paper, Cards, And Other Lightweight Materials.2. Crafting And Art: Paper Cutter Blades Are Also Used In Crafting And Art Projects, Such As Cutting Paper For Scrapbooking Or Card Making.