Premier Green Wood Base Paper Trimmer features a fully 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 for precise cuts. Accurately cuts paper, matte board, cardboard, film, tissue and textiles. Offers patented automatic blade locking system, torsion spring and finger guard for safety. Paper trimmer has Imperial and metric measurements and nonskid rubber feet.