Cleanly knockout conduit holes with the DEWALT® DCE6004K 2-1/2'' - 4'' knockout punches and dies kit. The dce600 knockout dies contain embedded magnets which attach to mild steel, to maximize precision in punch alignment. Punches and dies include laser etched markings to easily distinguish between sizes. Keep everything organized with the included TOUGHSYSTEM 2.0® tool box. The punches and dies are designed for use with the DEWALT® dce600 20V MAX* hydraulic knockout tool (sold separately).