The Dahle 561 Premium Guillotine paper cutter is one of the safest, most capable trimmers ever developed. It features a revolutionary rotating safety guard to protect fingers, a self-sharpening system for a perfectly honed blade, and an automatic clamp to hold your work securely. This German engineered paper trimmer is ultra-precise and is ideal for paper, cardstock, and matboard. SAFETY- Safety is a hallmark of Dahle Premium Guillotine Trimmers. The rotating safety guard surrounds the blade as you cut to protect your fingers without obstructing your view. The blade is designed to stay in position and not fall unexpectedly. SELF-SHARPENING- This trimmer features a self-sharpening cutting system. No need to worry about replacing dull or worn blades, this system sharpens as you cut to maintain a perfectly honed edge. The blade's precision graduated edge will remove even the tiniest sliver of paper and produce a clean, burr-free cut. AUTOMATIC CLAMP- Holding your work securely by hand is no longer necessary. The trimmer's integrated, automatic clamping system provides even pressure that prevents your work from shifting. METAL BASE WITH GUIDES- For durability, this German engineered trimmer features a sturdy metal base with carefully screened rulers and guides to help align your cuts. It's a solid foundation that will never warp or crack.