Carl heavy-duty, high capacity drill punches make punching large quantities of paper quick and easy | All punches feature an ergonomic handle for minimal effort and extra comfort. | Reinforced metal structure for stability of perforation | Ergonomic handle for minimal effort and extra comfort | Easy-To-Change punching blade | Easy-To-Change punching support board | Easy-To-Use self-Centering paper guide | Storage drawer for replacement parts | 3 hole punch