The Electric Punch by GBC is capable of two or three hole punches. It can accommodate up to 24 sheets of standard 20 lb letter size bond paper. The holes are configured for either standard configuration 3 hole punch, or legal size document 2 hole punch. The number of holes to be punched is selected using the switch on the top of the machine. If the paper jams, a manual reverse switch is located on the side of the unit.