Drills up to 12 sheets of 20-lb paper quickly and quietly Punch 1/4in. diameter holes in a standard 2-hole pattern (2-3/4in. centers) . Automatic on and off feature saves effort and time. Features a reverse motor de-jam mechanism and nonskid feet. Large capacity paper chip pan - less emptying. Plug into an outlet or use 6 AA batteries (sold separately) . Master Caster Paper Punches, Cutters & Folding Machines part of a large selection of office supplies. Master (R) EP210 Electric 2-Hole Punch, Gray is one of many Electric/Battery Operated Paper Punches available through Office Depot. Made by Master Caster.