If you are looking for a knockout punch that is designed to handle stainless steel, the Greenlee 745H-1/2 Punch is what you need. This round knockout punch features a slug splitter which allows for easier slug removal. It has a 177/200 in. hole size and 0.885 in. hole size nominal. The 1/2" round knockout punch has a max capacity of 10 ga mild steel. If you want to get the job done quickly and efficiently, then equip yourself with this Greenlee Knockout Punch today.. This item has been restricted from sale in the following state (s): []