Heavy duty desktop Corner Rounder Cutter machine is professionally designed for cutting corners to round shapes. It can cut coroplast, foam core, PVC and ABS plastic sheets, paper card boards, pads, booklets, magnet sheets, aluminum sheets, etc, even can easily cut 30mil aluminum sheet. It is built with hardened steel cutting dies and ideal for all corner rounding usages. Top and bottom cutting blades are all hardened steel, that's the difference with others.