Revolutionary ease-of-use design requires 50% less punching effort than any punch in its class. Also features breakthrough jam-free performance?punch heads and comfortable lever handle are fused into one mechanism, delivering full pin control. Features three punch heads; adjusts to hold two to seven (additional heads sold separately). Clear slide-out chip tray for easy clean-up. Sheet Capacity: 40; Operating Method: Manual; Number of Holes: 2-7; Hole Diameter: 9/32 in.