EZARCCarbide Hole Saw Kit, 3 Piece Carbide Tipped Hole Cutter with Pilot Drill bit for Hard Metal, Stainless Steel, Iron, Aluminum, Alloy

OK, I am a full-time electrician and use this kit almost daily depending on the job. The first kit was used for about a month before it was stolen. In that time I broke 2 of the pilot bits with normal usage within the first 6 times I used the holesaws. The actual hole-saw is great and very tough and sharp. The pilot bits are just not great. I then ordered a new kit to replace my stolen kit and on the very first use, my helper broke one of the pilot bits while drilling through mild steel for a generator. I was pissed and said I would do it myself, grabbed a new pilot bit and on the very first attempt I broke the pilot bit. I never had this issue before with Klein, GreenLee, or Lennox. I have since purchased a Klein kit with the exact sizes and although a bit more money, I am not breaking pilot bits.....Now on another note. I would like to know where I could find higher quality replacement pilot bits that are the correct size for the EZARC set because the actual saws are pretty good. If they would just not be so cheap with the pilot bits this would be a great set.One last negative. The case sucks and does not stay shut. It opens up in my van all the time and spills everything out. I have to keep it taped shut. So, overall, purchased two of these and both sets had the pilot bits break instantly and the case can be improved, otherwise the actually hole-saw cutters are great. We need replacement pilot bits that are better.UPDATE: The supplier for this kit has contacted me and is trying to investigate and remedy the situation with the pilot bits. I am suppose to get some newer style bits to try out and give them feedback.

I need to hang a chair from a chair lift, and the mounting rod is 1 1/8" diameter. This hole saw did the job through 0.30" angle iron!The carbide cutters still look new.Please note that I did this on a drill press, with plenty of cutting fluid, at 360 RPM, and after drilling a through pilot hole so I could use the hole saw from both sides.

I own a greenlee 660 set, with the interchangeable cups, it lasted me 2 years using it by myself, I loaned it to an apprentice for an hour, and he burned it up. The interchangeable cups are an empty promise, almost 50 percent the price of the whole set, just for the one inch. These are super sharp, fast cut.

We use these type of hole cutters for business everyday. We typically use the Ideal brand which have been worthy, but do tend to get rusty. These stainless ones were 20 bucks cheaper and work just as well. Very good for the cost, these would probably be a lifetime tool for a home hobbyist.

Its cuts through 10ga steel panels with no problem. Good price as well.