Premier - PREW18 Paper trimmer features a through-hardened, self-sharpening steel blade that cuts up to 20 sheets at once. Heavy, 3/4" wood base offers a permanent 1/2" alignment grid with Imperial and metric rulers for precise cuts. Trimmer accurately cuts paper, matte board, cardboard, film, tissue and textiles. Patented, automatic blade latch locks with every cutting motion. Finger guard protects entire length of blade. Torsion spring prevents blade from accidentally falling during operation. Trimmer also has an ergonomic soft-grip handle and nonskid rubber feet.