With this Bostitch three-hole punch PaperPro technology, easily three-hole punch up to 20 sheets, jam-free. Designed with sleek, comfortable curves and a durable all-metal design for long-lasting performance. To ensure consistent hole placement, the punch has an integrated paper guide and ruler. For maintaining a clean work environment, the base holds the chip waste and can be emptied through the flip-open door. Ideal for the home, office or school, this hole puncher is the perfect tool for any setting. technology by PaperPro requires 50% less force. technology by PaperPro requires 50% less force. Easily punches up to 20 sheets. No-Jam technology for smooth, hassle-free punching. Metal construction for superior performance and durability. Integrated ruler for convenient measuring. Paper guide keeps documents in place for hole placement accuracy. Easy-clean chip tray for less mess. Bostitch Three-Hole Punch, 20-Sheet Capacity, Silver/Black color, has advanced technology which makes punching 50% easier and offers a low-force design.