Using the Klein Tools 53819 Knockout Punch is quite straightforward. First, place the punch where you need to make a hole on the 1/2 - Inch EMT conduit or other suitable materials like aluminum, fiberglass, or plastic. Then, use a wrench to apply pressure. Thanks to its optimized design, you won't have to put in too much effort. When you're done punching the hole, the split slugs inside can be easily removed. As for maintenance, keep it clean after each use. Wipe off any debris or dust. You don't need to do anything special to its black oxide finish, but just make sure to store it in a dry place. And remember, this punch has a maximum capacity of 10 gauge mild steel, so don't try to use it on thicker materials to avoid damaging the tool.
