Dahle Professional Stack Cutters are manually operated but make easy cutting of up to 700 sheets of paper at a time. Safety shields can be found on either side of the cutting blade and will not allow the blade to move while they are in the up position. Once the shields are in place, you have the ability to cut cleanly though 200, 500, or 700 sheets of paper with very little effort. This clean, burr free cut through such a large stack of paper is made possible through a ground Solingen Steel blade and a paper clamp that places even pressure across the entire cutting surface. Model 842 offers an adjustable paper guide and models 846 and 848 feature a spindle driven, self-locking backstop for extreme accuracy and convenience during repetitive cuts. These cutters can be mounted on any secure table surface although the optional floor stands are recommended for proper cutting height and leverage.