Guide Rail for All Paper Sizes: This hole punch features an engraved metal guide rail on the side that can be used to line up different sized pieces of paper to ensure you punch the holes in exactly the right place. Once punched, the paper scraps collect in the confetti tray at the bottom which can be easily removed for disposal when full. This rail can also be easily removed to punch larger pieces of paper such as A3. Locking Storage System: This hole punch can be locked in place to save storage space. When not in use, simply push down the handle and slide the button on the front to the right to lock the handle in place. Extended Handle for Easy Use: The handle on this hole punch is extended making it easy to punch holes in paper ready for your binder. It can also be used to punch holes in expired credit cards before disposal for security reasons. This hole punch is a must-have for home, office, work, school, or university. With its sleek black design, it will look great on your desk or workstation.