Knockout punch in 4 seconds. An advanced knockout tool used with a cordless drill to draw punch dies together for quick accurate knockouts. No hydraulic ratcheting or mess. 9 Maxis punch dies sizes to 4, or use your current punch dies. Punch kit includes Maxis Marksman conduit layout tool to quickly mark center knockout points. Punch kit includes step drill bit. 2 inch knockout in 4 seconds. 4 inch knockout in 6 seconds