CombBind C20 Manual Binding SystemCompletely redesigned for maximum speed and operational 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: 330; Punching Sheet Capacity: 20.