Heavy-duty manual binding machine is designed for frequent use and documents up to 12" wide. It is ideal for large office applications. Punch 19 holes in up to 28 sheets at a time and bind up to 500 sheets with a 2" comb. Vertical document-loading ensures accurate punch alignment. Rotary edge guide accurately centers documents. Removable binding mechanism can be used separately. Built-in comb storage tray has an integrated document thickness guide for added convenience helping you select the proper comb width. Binding machine includes a front-access waste tray, three releasable dies for different document sizes, and binding starter pack.