Electric three-hole punch delivers sleek, compact automatic punching wherever you need it. Push-button electric punch operates electronically when plugged in, or wire-free through battery operation. Precision hollow steel punch heads slice through up to 12 sheets of paper and create 9/32" holes. Adjustable paper guide accommodates various document sizes and ensures consistent hole-punch placement. Design also includes an easy-clean chip tray. Hole punch operates on six AA batteries (sold separately).