Completely redesigned for maximum speed and: Ease. Vertical punch plus "green to go" paper alignment indicator to ensure accurate punching. Document Size Guide quickly measures document to determine spine size. Also features a staging area to prep projects which enhance workflow and productivity. Includes quick step user guide for simple and intuitive operation. Binding Spine Type: Comb; Binding Sheet Capacity: 320; Punching Sheet Capacity: 20; Maximum Binding Edge: N/A.