1.Simple Operation: Paper corner rounder is simple to operate, used to trim the right angles of jammed paper/photos into flat corners.2.Leverage Type Structure: Corner rounder adopts a lever type handle structure, which is light and labor saving, convenient and quick to use, and stable in performance.3.0.4mm Thickness: The Corner rounder can cut 0.4mm thickness and print 3 sheets of A4 paper at a time. It is light and portable and easy to carry.4.Metal Knife Edge: The corner rounder uses a metal knife edge to cut smoothly, with soft rounded corners,which will not scratch your hands, protecting your safety.5.Scope of Application: Corner punch can cut all kinds of paper, used for fancy corners of business cards,  greeting cards, plastic photos, DIY handcrafted, etc.