The Dahle 472 is a German Engineered commercial grade tool, with the ability to cleanly cut oversize banners, mat board, and fine art paper with the highest level of accuracy. It features a ground rotary blade, and a self-sharpening cutting system that cuts and sharpens in either direction. The high capacity trimmer features a self-sharpening blade that helps ensure a neat, straight and precise cut. The square guide rod holds the paper in proper alignment while the auto clamp keeps it firmly grasped. The cutting surface of Dahle 472 is marked in imperial and metric markings and is supported by a rugged metal base. Dahle's Premium Rolling Trimmers are designed for heavy duty applications. They are available in 14", 20", 26", 36" and 51" cutting lengths and are a popular choice among professional photographers, picture frames, and print and copy shops. As with all Dahle products, safety is at the forefront of design. To keep hands in the safe zone, the trimmer's blade is almost entirely enclosed- which virtually eliminates the chance of injury. Holding the work securely is no longer necessary. The integrated, automatic clamping system of Dahle 472 provides even pressure, and prevents the work from shifting. All in all, the cutter being the safest in the industry has one of the best cutting features available commercially.