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 & metric rulers for precise cuts. Trimmer accurately cuts paper, matte board, cardboard, film, tissue & 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 & nonskid rubber feet.