With a capacity of 300 sheets of 20lb bond, this little gem will punch whatever you have. If you are inserting chicago screws, or just want a hole in plastic name plates, utilzing this punch will ensure a neat clean hole every time. With replaceable punch bits in a number of sizes, you can punch from a 3.0mm (1/8") to 8.0mm (5/16") hole. A punching pad base ensures that even the bottom sheet is punched cleanly.