Industrial rotary trimmer cuts through up to 20 sheets of standard 20 lb bond copy paper. Also trims card stock, acetate, cardboard, drafting film, illustration board, leather, black core artist mat board, plastic sheets, laminates, and tissue paper. Self-sharpening trimmer has a fixed housing and does not require replacement blades. Rotary trimmer is specially designed by RotaTrim for medium volume office and classroom applications. Sturdy MDF base is calibrated and features preset measurements for common-sized items.