Punching powerhouse takes productivity to the next level. Engineered to use 30% less force to punch than comparable heavy-duty punches. Ergonomically designed handle and one-touch adjustment disk for superior comfort, safety and ease of use. Easy-to-use chip tray. Includes three punch heads. Letter size. Durable, tough all-metal construction. Sheet Capacity: 160; Operating Method: Manual; Number of Holes: 2-3; Hole Diameter: 9/32 in.