MTG-1820 (18") Guillotine Trimmer. A high quality, easy, prcise Guillotine-style paper trimmer that cuts up to 20 sheets of 20lb paper. High strength "Samurai Steel" cutting blade is self-sharpening and requires no mantinance. Built-in figer-guard helps prevent injury. Sturdy metal base provides added stability and features inches and metric ruler as well as preset measurements for common sized items. Handy carrying handle included. Limited Lifetime Warranty.