Using the Klein Tools 53728SEN Knockout Punch Set is a breeze. First, choose the right spot on your electrical panel where you need a hole. Place the punch and die on the marked area, and use the draw stud to secure them. Then, use a wrench to turn the stud. Thanks to the optimized design, you won't need to put in too much effort. As you turn, the punch will create a clean and accurate hole. When you're done, you can easily remove the split slugs inside. Just pull them out. Remember, this punch can cut up to 10 - gauge mild steel, as well as aluminum, fiberglass, and plastic. But don't try to use it on materials that are too thick or hard beyond its capacity. After each use, clean the punch and die with a dry cloth to keep them in good shape. Store them in a dry place to prevent rusting. This way, your Klein Tools punch set will last you a long time and always be ready for your next project.