The GBC Electric Hole Punch GBC7704270 is an adjustable two-hole or three-hole punch designed for office use. It features simple push-button operation and can drill 9/32" holes through up to 24 sheets of 20 lb. paper at a time. The paper alignment guide ensures perfect punching, while the extra-large throat accommodates oversized paper. A jam reverse knob easily clears jams, and the chip-view window indicates when to empty the paper chip tray.