Color Coils. A bright new binding style. Open 360° (back to back). Perfect to post. Easy to update Documents GBC CoilBind C100. Strong punch and manual coil feeder. Size guide for easy coil selection. Easy punch alignment of your document. High productivity, punches up to 12 sheets at a time. Binding capacity up to 18mm (140 pages) Crimper included. Quick reference "how to do it' guide printed on the machine.