Cut paper, film, fabric, foil, mat board, etc. with these trimmers. They have replaceable, self-sharpening, hardened, tool-steel blades. A bright red safety guard rail protects fingers, and a safety spring keeps the ergonomic soft grip handle from falling. The lock holds the handle in place when not in use. These trimmers have a 20-sheet capacity and feature a slide guide for uniform trimming. Each has a ¾" thick wooden base with a permanent ½" grid and dual English and metric rulers to insure correct alignment.