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 metal construction. Antimicrobial product protection. Sheet Capacity: 160 Operating Method: Manual Number of Holes: 2-3 Hole Diameter: 9/32".