Four interchangeable blades deliver straight, scored, perforated or wave cutsï¿½great for school, office and craft applications. Self-locking clamp mechanism holds paper in place for accurate cutting. Edge reference guide and easy-to-read measurement grid increase cutting speed and accuracy. For added safety, completely enclosed blade is only exposed during cutting. Built-in blade storage. Trimmer Board Type: Rotary; Sheet Capacity: 10; Cut Length: 18 in; Trimmer Board Special Features: N/A.