Westcott - ACM16874 Guillotine trimmer features a heavy-duty, CarboTitanium blade that's eight times harder than steel to smoothly cut up to 30 sheets of 20 lb. paper. Alignment grid and onboard measurements in Imperial and metric help keep your cuts precise and accurate. Finger rest positions your fingers safely away from the cutting area to prevent injuries. Safety guard and lock secure the blade to prevent it from moving between cuts. Paper trimmer is perfect for cutting paper, thick cardboard, photos and more.