AMZCNC 8 Ton 1/2" to 2" Hydraulic Knockout Punch Driver Tool Kit Electrical Conduit Hole Cutter Set KO Tool Kit with 6 Dies Hole Complete Tool (Knockout Punches) (8T（1/2"~2"）)

Too bad product. Leaking after four cuts Waste money

I have used this for a bunch of knockouts in steel enclosures and it works well. My only complaint is the instructions are not great, and I managed to mess up the assembly a few times. If it feels like it is harder to pump than it should be double check you set it up correctly.

works great and as expected. also, came with extra seals for the hose. That was nice.

Worked well. Had to punch wiring holes into steel studs, some .1” thick. Uni-bits are pore choice. Machined an adapter for the 2” punch to use the 7/16 pull stud. That is all that is need to punch 26-gauge steel. I needed ≈900 holes in my steel eve soffit for vents. Just hand Punch a .5” hole for the stud than the knockout punch, No drilling required. The hose could be a little longer.

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