AMZCNC Manual Knockout Hole Punch Driver Kit 1/2 to 2 inch Electrical Conduit Hole Cutter Set KO Tool Kit ((Conduit Hole Size) 1/2"~2" Knockout Punch kit)Recycled Claim Standard 100

I use this for making holes in circuit breaker panels, and so far I haven't had any problems doing so.Well made cutters.

Works like the name brand product at a much better price. The included wrench is ratcheting which makes it much quicker and easier to complete the punch. I used it to punch holes for 2" conduit, it's largest size, through a steel panel and it worked well.

I bought the 1/2" knockout tool. It worked perfectly with little effort.

There is almost no easy way to drill 1-½ inch holes in metal in a tight space, this one is one of them. I needed to drill the metal framing in my basement to pull a rolex cable and the last hole on the left was so tight, I had to use a tight fit accessory on my drill bit for the pilot hole. Then I used this tool to finish the job, the tightest was done by hand with a ratchet socket wrench and the remaining where done carefully with an impact drill, super easy whether by hand or with the impact drill. Don't forget to lubricate the head so it will ease the cut. The broken lug is a must, could not be easier to empty the tool.

Really nice hole punches....but, they are all mislabeled. 2" is actually 2.45" etc.