The Plastikoil PBS Combo is a simple and economical manual punch and coil bind system. Simply place the document into the slot, pull the lever, insert the coil, and the work is done. The Koil size calculator inform the user on the appropriate coil size. The finishing pliers are perfect for clipping loose ends. Punches up to 15 sheets per punch. Binds documents up to 250 sheets (1" thick). Binds documents up to 14" long.