Swingline Optima 20 Electric Punch, Black/Silver

Alignment indicators allow for precise 3-hole punching Oversized activation button offers quick, efficient operation. Punches up to 20 sheets of 20-lb paper. Automatic reverse feature releases jammed paper. Transparent hinged chip drawer lets you know when it is time to empty. Portable operation with either an AC adapter (included) or 6 AA batteries (sold separately).