With ProPunch technology, easily and cleanly slice through 12 sheets with 50 percent less effort. Sleek, all-metal construction delivers long-lasting, premium performance. Integrated ruler and paper guide ensure consistent hole placement while the nonslip base provides extra stability during use. Built-in handle lock on the three-hole punch allows punch to be conveniently stored in drawers. Internal chip chamber empties through a rear door for neat disposal without having to remove the punch base.