The CARL Paper Trimmer CUI12218 is a professional rotary trimmer featuring an 18" blade, suitable for various office tasks, school projects, and arts and crafts. Its patented Carl rails and premium carbide blades ensure that paper and paperboards are held firmly in place for precise cutting. The trimmer is equipped with a sturdy, metal calibrated base that enhances accuracy and stability, along with preset measurements for common-sized items. It can cut up to 10 sheets of standard copy paper and is compatible with optional B-Series blades for 11 different cutting patterns.