The Martin Yale Premier Heavy-Duty Wood Board Paper Trimmer PREW18 is designed for precision cutting. It features a through-hardened, self-sharpening steel blade that cuts up to 20 sheets at once. The heavy, 3/4" wood base includes a permanent 1/2" alignment grid with Imperial and metric rulers for accurate cuts. This trimmer is capable of cutting various materials including paper, matte board, cardboard, film, tissue, and textiles. It also includes a patented automatic blade latch for safety, a finger guard, and an ergonomic soft-grip handle for comfortable use.